How I Met Your Mother

Season 9

The Locket

1. The picture that Ted gives Robin for her wedding gift is the same picture used at the end of the theme song
2. While they're driving to Farhampton, Ted hands Lily a binder named 'Manhattan to Farhampton, Lil and Ted's excellent adventure.' This is a reference to the film 'Bill and Ted's excellent adventure.'
3. When Barney and Robin are discussing the "wildcards" that are coming to the wedding, the picture of Uncle Jacques is the same person as Peculiar Jacques from season 7 episode 7 when Robin turned down Ted to go to a Weird Al Yankovich concert and took her then-boyfriend, Kevin, with him. She said that Weird Al was a rip off of Peculiar Jacques.... Who apparently is her uncle.
4. When Barney and Robin are discussing their possible relation, Barney makes a reference to King Joffrey from Game of Thrones whose parents were brother and sister. Joffrey is notoriously a villainous character, continuing the tradition of Barney's rooting for villains in film and TV.
5. For the first time Barney says his catch phrase "Legendary" without the "wait for it..." tmesis. When Robin points this out he says, "I've got you, I don't have wait for it anymore"

Coming Back

1. In the scene where the Russian versions of Barney and James hit a gypsy woman, it is a reference to the Stephen King novel "Thinner."
2. The first time that Ted and "the mother" interact with each other is in Ted's flash-forward to one year from the wedding. His first words to her are, "Hey Beautiful," which is the title of the theme song to the series sung by The Solids.

Last Time in New York

1. The film The Princess Bride (1987) and Mandy Patinkin who portrayed one of the main characters (Inigo Montoya) is mentioned frequently throughout the whole of this episode. Marshall and Ted citing famous lines of Inigo Montoya during their sword fight, as well tries Lily when she is fighting with Robin. Robin also mentions Mandy Patinkin several times as being a magical phrase attracting old people. She and Barney use it to gather their elderly relatives.
2. Mandy Patinkin is an actor known for roles in The Princess Bride, Chicago Hope, Criminal Minds, etc.

The Broken Code

1. The copies of The Bro Code featured in this episode are actual copies of the real book published in 2008.
2. Barney's suit is Moods Of Norway
3. Robin states her metabolism means she loses weight rather than gains it, which is similar to Lily needing to gain five pounds in order to fit into her wedding dress in the season 2 episode 'Showdown' because she kept losing weight accidentally. However whereas Robin was annoyed at Lily for that, Lily is annoyed at Robin because of this. (This is either ignored by Lily as her weightloss was due to wedding stress, not her metabolism like Robin's or they forget about Lily's similar weight loss).

The Poker Game

1. At the Halloween party when Marshall is dressed as a wedding gift and Ted is dressed as a thank you note, the girl dressed as the "slutty pumpkin" can be seen in the background.
2. In the flashback after Marshall and Lily's wedding his hair in the middle is just growing back after he shaved it with the clippers.
3. When Marshall dressed up as the wedding gift and went to the bar and asked Lily why Ted wasn't getting it when referring to Marshall's wedding gift, she said " I don't know, why haven't you got the message to dress up as a pregnant teenager, home skillet?" which was a direct reference to the movie Juno (2007) in which Lily was dressed up as Paulie Bleeker played by Michael Cera in the movie.

Knight Vision

1. On the flashback sequence where Lily and Marshall switch scenarios with Barney and Robin, while they are " French kissing" vigorously, you can see Lily start to laugh and break character.
2. This is the third time they used the car sounds exactly the same once when the car went off on the sale for Lily's wedding dress. (Was an actual car sound) second when Ted had trouble with Zoey in his class and Lily told him to make the sounds of that car while turning the lights on and off to calm his students down. Then this time where Robin was talking about how her ex roommate sounds like a car during sex.
3. Edward Herrmann would pass away the 31st of December 2014, a few months later after this episode first aired and the series had already finished.
4. Cassie (Anna Camp) is introduced - along with her father, played by Joe O'Connor. Both actors appeared in Mad Men (2007) as Bethany Van Nuys, one of Don Draper's love interests, and Tom Vogel, father-in-law and business client of Pete Campbell, respectively.

No Questions Asked

1. In this episode, Marshall says he's never had a reason nor desire to ask Lily to do a favor for him "no questions asked". However, in S2E02 "The Scorpion and the Toad" after Lily returns from San Francisco and Barney has just "rack jacked" twins from Marshall, he asks her to do him a favor but to never ask him why. Lily then goes into the bar and throws a drink in Barney's face. Moments later, pretending to be her own twin, she does it again.
2. In this episode, Marshall, played by Jason Segel, says he thought he saw Bigfoot, but it turned out to be Russell Brand. Jason Segel and Russell Brand starred together in Forgetting Sarah Marshall (2008).

The Lighthouse

1. Barney talks about his mother's scrambled eggs and how they inspired a number of classic rock songs. This is probably a reference to the song "Yesterday" by The Beatles being named "Scrambled Eggs" as a working title to begin with.
2. At this point, Robin's mom is the only one of the gang's parents who has never been seen on the show. Every other parent has appeared at least once.

Platonish

1. When Barney enters the booth and says "No two single people in the world are ever platonic" and then pauses before saying "Symposium," he is making a subtle reference to the Greek philosopher Plato and one of his most influential works, 'Symposium'.
2. While Robin is telling the redhead at the bar that she is Ryan Gosling's personal assistant, Marshall is at a basketball game where he announces that Ted is Nicholas Sparks, prompting one of the coaches to admit he loves 'The Notebook'. Ryan Gosling stars in the movie adaptation of Nicholas Sparks' 'The Notebook'.
3. The lens skyscraper built by Hammond Druthers was inspired in the 20 Fenchurch Street "Walkie-Talker" solar glare problem (London City, previous -2013- summer).

Mom and Dad

1. The music playing while Barney's parents are trapped in the elevator is a soul version of the groups mainstay "bang bang bangety bang," which was first introduced in 5x17.
2. Nancy Travis originally played Barney's step mom when he first met his dad (played by John Lithgow) however in this episode Nancy Lenehan plays his wife.
3. Sherri Shepard and John Lithgow both star in Trial and Error (2017).
4. Nancy Lenehan guest starred on the 2nd episode of 3rd season of Buffy the Vampire Slayer which stars HIMYM Alyson Hannigan
5. The Rastafarian hang glider eating a sandwich is yet another reference to showing sandwiches instead of marijuana.
6. Towards the end of the episode, after Ted takes the blame for the ruined photograph, Billy Zabka says, "You're all right, Mosby." This mirrors Zabka's final line in The Karate Kid, where he tells Daniel, "You're all right!"

Bedtime Stories

1. The man who plays Gus, the rapper on the bus, is played by Lin-Manuel Miranda. Lin actually attended Wesleyan University, the university that Lily, Ted, and Marshall attend in the show. The show's creators, Carter Bays and Craig Thomas, also graduated from Wesleyan.
2. The whole episode is narrated in iambic heptameters (except for a few variations, for example, a short rap segment)
3. This episode has the second lowest rating of the series, just behind Last Forever: Part Two.
4. Lin-Manuel Miranda is the writer for the Broadway smash musical Hamilton which is produced in New York
5. In the second bedtime story Robin runs into Simon who is clean cut and lives in New York. However, in season 8 episode 15, Barney obsesses over finding out who Robin stalked. He travelled to Canada to interrogate her exes where Simon was displayed as still living in Canada, still sloppy, and balding. If this is a flashback to one of Robin's breakups BS (Before Stinson), then Simon must have only briefly cleaned up and then moved back to Canada and regained weight after running into Robin. Maybe just a plot hole.
6. The man who does a short rap sequence on the bus, Lin Manuel Miranda, also guest starred on House M.D. His character on House also tried to rap
7. Although she has no lines in Barney's story, the girl in Barney leaves in bed is the college professor Ted goes on a date with.

The Rehearsal Dinner

1. During the scene where the gang is making fun of Canada, a couple in the background meets, gets engaged, awaits the birth of their child, and celebrates the child's graduation. At the end of the scene, the woman, now old, mourns over the ashes of the man and then meets someone new.
2. During the scene in which Ted Mosby is receiving his piano lesson in costume, the piece of music he is asked to play is the Black Key Etude by Chopin.
3. Ted tells the gang he is taking piano lessons "again", so he can perform at the rehearsal dinner as a gift. He is seen playing piano with Victoria when they meet at Stuart and Claudia's wedding.
4. In this episode, Ted tells Robin and Barney that he is planning on taking piano lessons to perform for them as a wedding gift. However, in Season 1, Episode 13, he plays piano while Victoria tap dances.
5. When Barney walks into the "Laser Tag place" you can clearly that the Farhampton Laser Tag sign isn't covering the whole sign and Ice Rink is showing at the very bottom of the sign.

Bass Player Wanted

1. The $600-a-bottle scotch brand name, Glen McKenna, is made up. The creators thought it best that way, to avoid legal issues. It is named after Chris McKenna, a writer/producer who has worked with the shows creators.
2. After airing, the final few seconds of the episode were redubbed. Originally, Barney stated in shock "Oh my god, it's the fourth slap, I don't know why was I acting so obnoxious?". It was the seventh slap, however, with two remaining as the original slap bet (5 slaps) got extended to an additional 4 slaps after the first four were given. The redub, in which Barney says "Oh my god, it's the next slap" is heard in reruns, on DVD and Netflix.

Slapsgiving 3: Slappointment in Slapmarra

1. The chapter titles in this episode reference Kill Bill. The fake children's book "The Slapping Tree" is written by Pai Mei, the kung fu master who taught Bill, Elle Driver, and The Bride in the Kill Bill movies.
2. The title of this episode references an old fable - Appointment in Samarra. re-told by W. Somerset Maugham in which a man on seeing Death attempts to escape his fate.
3. Red Bird asks Marshall "What is the sound of one hand slapping?", referring to a traditional Buddhist koan "Two hands clap and there is a sound. What is the sound of one hand clapping?"
4. This is one of the lowest rated episode of the entire series. Alongside episodes "Bedtime Stories" and the finale, "Last Forever: Part Two."
5. The first slap training chapter is called the "Cruel Tutelage of Red Bird". Another obvious nod to Kill Bill 2, which contains a chapter named "Cruel Turelage of Pai Mei"
6. The song that Boyz II Men sing, "You Just Got Slapped" was originally written and performed by Jason Segel for episode 9, season 3 "Slapsgiving" in which Marshal sang the song on the piano after slapping Barney.
7. When Marshall is deliberately getting slapped by girls that Barney has been with, the girls in order are: Crazy Meg, Shannon, Shelly, Karina (hot bartender), Mrs. Douglas (attracted to Barney in overalls), and Nora.

Unpause

1. "Truth Serum Drunk" Barney gives the answer "Yes, but not while she was Secretary of State" and "Yes, but not while SHE was Secretary of State" to two questions we don't hear. The first is a reference to Madeline Albright, the ongoing joke carried on from "The Yips" and "The Bracket", while the second is meant to make you wonder, is he referring to Condoleezza Rice or Hillary Clinton, as they are the only other two women to hold the position.
2. "Jabba Drunk" Barney says "Aggle Flagged Klabble. Wubby Flappy Snurp.." a line from the Mo Willems Children's Book "Knuffle Bunny"
3. Ted's children's names are Penny and Luke.
4. It is finally revealed in this episode what Barney does for a living. PLEASE stands for Provide Legal Exculpation and Sign Everything.
5. We learn the names of both of Ted's children in the episode "Unpause" (S9:15) We learn that his daughter's name is Penny when Ted says "I'm so proud of you. Penny's so proud of you." We learn shortly after that, his son's name is Luke when he says, "Every rule has an exception. And for us, that exception was you Luke."
6. One of the first things Barney (Neil Patrick Harris) says when "Truth Serum Drunk" is that Ted (Josh Radnor) is taller than him, he wears lifts in all his shoes. In reality, Neil Patrick Harris actually is taller than Josh Radnor. Neil Patrick Harris is 6' 0". Josh Radnor is 5' 11.5".

How Your Mother Met Me

1. This episode is the 200th of the series.
2. This is the highest rated episode in the entire series, although tied with Season 2s Slap Bet
3. In the scene where Louis and Tracy meet, you can see signs seeing "Save the Arcadian" in the background.
4. The lottery reference that the mother states to Louis, is also mentioned by Ted in season 1 The Return of the Shirt.
5. The "Save the Arcadian" posters show where Tracy's timeline aligns with Ted's. When she met Louis, he had just met Zoey.
6. Prior to Cristin Mililoti's fame with HIMYM, she was best known for her performances on Broadway, where her singing and acting garnered high praise.
7. The scene where The Mother plays "La Vie en rose" on the balcony is an allusion to the scene from "Breakfast at Tiffany's" where Audrey Hepburn played the ukulele in the window, singing "Moon River". Hepburn also sang "La Vie en rose" in the movie "Sabrina".
8. Toward the end of the episode, right after the mother goes outside to pray for advice from her ex-boyfriend who had passed away, the piano melody quotes The Cure's "Just Like Heaven." This was also the end credit song for the very first episode of the series.
9. When the picture of Tracy and Louis at the bar is shown, Robin can be seen in the background laughing on the left side.
10. In the original airing, the scenes at the club on St. Patrick's Day were said to take place in April of 2008. Despite St. Patrick's Day actually being on March 17th each year. This mistake was soon noticed by producers and was amended to say, "March 2008" in later airings.
11. Jason Segel wrote and sang the lyrics to "Marshall and the Machines" following the encouraging words of his first director Judd Apatow, who told him only original content would make him a success in the future (Segel has since also written for The Muppets, the Five-Year Engagement and Forgetting Sarah Marshall).
12. This is not the first occasion where cast members employed their musical talents. Unlike other sitcoms that bring in singing voice-overs for main cast members, much of the HIMYM cast have lent their own vocal talents on occasion.
13. When The Mother speaks to Max, she apologizes for interrupting Max and his father playing baseball. This is a reference to the movie "Field of Dreams", which has previously been established (along with the original Star Wars Trilogy) as one of Ted's favorite movies.
14. Neil Patrick Harris and Josh Radnor lent their musical talents in "Time Travelers' For the Longest Time". In addition, Neil Patrick Harris has appeared on Broadway on multiple occasions, even winning a Tony Award for his performance in "Hedwing and the Angry Inch" and was the lead in Dr. Horrible's Sing-Along Blog.
15. The song The Mother sings as an English muffin, is a parody of the song "One" from the Broadway musical "A Chorus Line".
16. This is the fifth episode to have an alternative title sequence after "Pilot", "Hopeless", "46 Minutes" and "Bedtime Stories". This one shows the Mother and her gang, which includes Louis, Cindy, Darren and Kelly, who may be another member of the Mother's band.
17. In the Pilot episode, Yasmin - the Lebanese girl - is sitting next to Barney; however in the recreation of the scene she isn't there.
18. In the season nine episode, "How Your Mother Met Me", there are "Save the Arcadian" posters on the wall behind Tracy when she is loading equipment in the car.
19. Ted was wearing a sweater outside while listening to the Mother playing the ukulele, the next scene Ted is wearing a shirt.
20. When the mom is in Ted's class, he announces the class is architecture 101. Shortly after, she scrambles to leave and once outside, she realized she was in the correct class and is shown rushing back. However, at the same time, we see Ted rush by to get to his class. In the original episode, Ted continues to teach for 20 minutes before he's kicked out. This means the mom was wandering outside for 20 minutes before realizing she was in the correct class, which may not seem believable since she simply had to look at her schedule.
21. When The Mother meets Louis, who helps her load her music equipment in her van, she calls him "Superman". Louis is played by Lou Ferrigno, Jr., son of Lou Ferrigno, who played another superhero, The Incredible Hulk (1978).
22. This is the second time the title parodies other people.
23. This episode's title is a pun on the series' title.
24. The show's opening theme song and the photos displayed during it differ in only four episodes throughout nine seasons. How I Met Your Mother: Hopeless (2011) shows the main characters playing various instruments, How I Met Your Mother: Bedtime Stories (2013) is played to the tune of a music box, How I Met Your Mother: 46 Minutes (2012) excludes Lily (Alyson Hannigan) and Marshall (Jason Segel) after they move to the suburbs with new photos of Ted (Josh Radnor) and Robin (Cobie Smulders) looking annoyed with Barney (Neil Patrick Harris) and How I Met Your Mother: How Your Mother Met Me (2014) shows Tracy (Cristin Milioti) with several of her friends. How I Met Your Mother: 46 Minutes (2012) has a second version later in the episode to a Russian theme with Stripper Lily and her boyfriend.

Sunrise

1. The two younger guys Barney teaches how to live in this episode are based off (and resemble) the creators of the show Carter Bays and Craig Thomas. According to DVD commentary on previous seasons the creators claim to have had a similar situation happen in real life and base the character of Barney off of that interaction.
2. When Ted and Robin are on the beach, Ted asks Robin whether he should have kissed her on their first date, and she says "yes". In the first episode, Ted tells his future kids that a few years after their first date, he asked Robin whether or not he should have kissed her and that she said "yes".
3. Marks the final appearances of Ted's two longest-term girlfriends. Stella - Doctor in Los Angeles. Victoria - Owns a bakery in Germany.

Rally

1. The woman on the scene from Argentina doesn't speak Argentinian (She speaks Latin-American Castillan). But she could be an immigrant.
2. When Marshall gets interviewed after getting elected for the supreme court the microphones show both Metro News 1 and World Wide News. Both of which Robin has worked for.
3. Marshall and the Farhampton chef break the 4th wall during the "Ted discovers bacon heaven" scene.

Vesuvius

1. No narration from old Ted.
2. The wedding book that Lilly makes for Robin plays an instrumental version of "Sandcastles in the Sand" when Robin opens it.
3. The joke from the wedding bride 2 where 'Narshall' has chocolate cake covered on his face is a reference to This Is The End (2013) where Jason Segel tells Kevin Hart this story.
4. It is revealed what was Ted's embarrassing story about a thermos that Barney used to blackmail Ted in S6E18, when Robin says while watching the wedding bride 2: I wanna see if Jed can get his wiener unstuck from that thermos.
5. Ted starts to cry when Tracy says "What mother doesn't come to her daughter's wedding". He cries because he knows that Tracy is sick and won't be alive for her daughter's wedding.
6. The year Ted and the Mother come to the realization that they've told each other all their respective stories is the same year the Mother dies.
7. The title comes from the Italian volcano Mount Vesuvius, which destroyed the ancient city Pompeii. This alludes to the gang's superstition that a super-volcano will destroy all life on Earth. It is also used to foreshadow the end of the gang's era, as well as Tracy's untimely death.

Daisy

1. As in "Romeward Bound" (#8.21) Marshall says one line in Italian " Non Mastroianni tutti i funyuns " meant to be the translation for " don't Bogart all the funyuns ". He substitute the name Bogart with the name of a famous Italian actor ( Mastroianni ) but the line doesn't work in Italian.
2. In the scene at the captain's house a bottle of Glen McKenna 35 year can be seen on the counter.
3. Robin is not a true Canadian she's duel nationality Tracy Ullman plays her mother with her real British accent meaning Robin is Canadian and British.
4. Marshall says Lilly would place her cigarette butt in the Daisy plant since she was an environmentalist and would know it would bio-degrade. Cigarette butts aren't biodegradable.
5. After finding Lily's pregnancy test is the potted Daisy, Marshall and Lily name their daughter Daisy.
6. When the captain addresses his house maids, his love for boats is further demonstrated as they sing a number from Gilbert & Sullivan's "HMS Pinafore".

Gary Blauman

1. Taran Killam, who plays Gary Blauman, is married to Cobie Smulders, who plays Robin Scherbatsky, in real life.
2. In the beginning of the episode, when Ted and the mother are walking past the Scottish-Mexican restaurant, there is an advertisement for Wharmpess beer in the background. This is the beer Marshall and Barney's former coworker Randy Wharmpess created.
3. There are 3 spouses of the main cast playing various roles. Sandy Rivers, played by Alexis Denisof, is married to Alyson Hannigan who plays Lily. Gary Blauman, played by Taran Killam, is married to Cobie Smulders who plays Robin and Scooter is played by David Burtka who is married to Neil Patrick Harris.
4. The song playing in the background while the Camera floats over the parking lot, is called: "Where Are They Now?" by the Kinks.
5. During the flash forward about the future of some minor characters, Ranjit refers to his servant as "Bitterman." This is a reference to Arthur's limo driver of the same name in Arthur (1981).
6. This episode features two repertory players (main cast members) from Saturday Night Live (1975). Gary Blauman is played by Taran Killam, who joined the SNL cast in 2010, and Jeanette is played by Abby Elliott, who was an SNL cast member from 2008-2012.
7. When Marshall is reassuring Robin he can handle the seating chart issue caused by the arrival of Gary Blauman, he claims that table 27 from his wedding still gets together. In the cutaway it shows table 27 on a log ride at Tuckahoe Funland. Tuckahoe Funland is the amusement park that Marshall would have represented had he taken the job at Nicholson, Hewitt and West in season 3 episode 6.
8. In the end, Ted is asked by the mother to finish his story of Gary Blauman. But while telling the story, future Ted is narrating the story to his kids. The story ends back with the mother as if it was being told to her.
9. Last appearance of Alexis Denisof as Sandy Rivers.
10. Lily reveals a tattoo on the back of her left shoulder saying it has been there since 2006 when she and Marshall were apart however in The Naked Man it is seen that the same spot does not have a tattoo. But she clearly said that she has been wearing cover up. That is why it isn't seen.
11. Blahblah's name is finally revealed/remembered in this episode: Carol.
12. Gary Blauman died according to Barney's story in 'The chain of screaming' but he reappears in this episode
13. This episode reveals the fate of several recurring characters: James (Barney's brother) - gets back together with his ex. Carl (McLaren's bartender) - trains his son to run the bar. Patrice (Robin's ex-coworker/friend) - becomes a relationship advisor. Ranjit the limo driver - becomes a rich limo company owner. Jeannette (Ted's psycho ex) - arrested for mailing urine to celebrities. Kevin (Robin's counselor/ex-fiancée) - married to Jeannette. William Zabka (Karate Kid villain) - award-winning poet. Zoey - still protesting stuff. Scooter (Lily's ex-boyfriend) - married to Jasmine, Lily's doppelgänger. The Blitz (always missing important events) - misses big slot machine win after 3 days of trying. Sandy Rivers (Robin's co-news anchor) - Russian news anchor after scandal in US.
14. Barney said that Gary Blauman died in season 3 episode 15
15. In episode 17 from season one Marshall mentions the name of Blauman when he talks to one of his colleagues over the phone.
16. At the end of the episode, Tracy asks Ted what he was doing and he replied with, "Remembering this." It could be Future Ted answering that question because he was remembering the night he knew that Tracy was someone he never wanted to let go of.
17. When Ted and his wife are hiding behind a vehicle after spotting her ex-boyfriend, Ted says they are hiding behind a van. They are in fact hiding behind a Chevy Suburban. The name can be seen in the first shot of them ducking behind the SUV.

The End of the Aisle

1. Final episode narrated by Bob Saget as Future Ted.
2. Robin's wedding march song is the Robin Sparkles song "Sandcastles In the Sand"
3. The song playing during the wedding is Pearl Jam - Future Days.
4. The last appearance of Colbie Smulder's husband, Taran Killam as Gary Blauman.
5. At the beginning of the episode when Ted and Robin are talking and Ted mentions not wanting to hang out with the guy who's wives keep ending up dead at the bottom of his staircase, he is referencing the 2004 documentary series The Staircase (2004) which would later be added to Netflix and garner world-wide attention.
6. When Robin walks down the aisle, the organ plays 'Sandcastles in the Sand' which is the song that first brings Barney and Robin together, originally sung by Robin.
7. This episode contains the last slap awarded to Marshall in Slap Bet (2006)
8. Even though Robin is shown to have a strong dislike of Patrice, she is Robin's second bridesmaid. This links to Lily's statement a few episodes earlier that Robin has no other female friends besides her.

Last Forever: Part One

1. After spotting 'The Mother' on stage, Barney exclaims 'Grape Scotch' which is a reference to Doc Brown in the 'Back to the Future' Franchise whose famous saying is 'great Scott!' However Barneys wording links to the season 5 episode 'Architect of destruction' where he drinks and to his surprise, enjoys a Grape Scotch at McLaren's.
2. Although Marshall and Lily's third child's name and gender are never revealed, Alyson Hannigan said on her Twitter page that it was a boy named Mark.
3. After Ted and Robin broke up, she traveled to Argentina. After Barney and Robin travel to Argentina as a couple, they decided to divorce.
4. Barney and Robin announce they got divorced in this episode

Last Forever: Part Two

1. Due to the ending which made fans angry, the creators have decided to make an alternate ending.
2. HIMYM prop master David Baker confirmed via Twitter that they also shot a scene in which Robin is performing "Let's Go To The Mall" at her wedding reception with The Mother's band, Superfreakonomics. This too was cut from the final aired episode.
3. The episode was trimmed by 18 minutes because it was too long.
4. In 2018, Barney claims to want to be like bachelor George Clooney. Coincidentally, Clooney himself got engaged the month after this episode aired.
5. Josh Radnor confirmed in an interview on his official Twitter account that the scene featuring Robin as a bullfighter is present in the 18 minutes cut.
6. In the group picture taken by The Mother, they are sitting in the exact same order as the group picture in the opening credits (Marshall, Lily, Ted, Barney and Robin, from left to right).
7. This is the only episode in the entire series in which the narrator is Josh Radnor (Ted) instead of Bob Saget (future Ted).
8. Ted isn't wearing a wedding ring when he's talking to his kids in the penultimate scene.
9. They are drinking Glenn McKenna 35yr in the bar scene
10. The episode was set to air on April 28, 2014, but it was then changed to March 31, 2014.
11. The song 'Downtown Train" is heard at the Farhampton train station when Ted first talks to The Mother. This version is by Everything But the Girl. The original version is by Tom Waits, composer of the song.
12. Ted and Tracy being engaged for five years before getting married may be a nod to Jason Segel's movie The Five Year Engagement.
13. Ranked as one of the most hated series finales of all time.
14. In the group picture taken by The Mother, Marshall's eyes aren't closed, disproving the fact that Lily says Marshall takes bad pictures.
15. Last show of the series.
16. The Mother's name was actually revealed in the first season at the end of the episode "Belly Full of Turkey" when Ted meets a stripper named Tracy. This explains why his kids believed him when he faked them out saying she was their mother.
17. The scene where the kids convince Ted to go out with Robin was shot back in 2006, when season 2 was airing.
18. The cast did not know the name of the mother until they read the last script. In all the previous ones The Mother was named as TM. In the last episode we found out that TM stands for Tracy McConnell.
19. In Last Forever: Part 2 when the group is sitting at the booth you can see Marshall handing over money to Lily from their long term bet that Ted and Robin wouldn't end up together.
20. The alternate ending hints that Barney and Robin get back together after their divorce.
21. When Ted's under the umbrella with Tracy you can see that he's got a flesh-colored bandage on his right hand, from the ultimate high-five with Barney.
22. Alyson Hannigan confirmed via Twitter that they shot a scene in which Lily repays Marshall for their long-term bet after Robin and Ted end up together. It was cut from the final aired version of the episode.
23. The Mother dies of an unknown illness 6 years before 2030.
24. After Barney reveals he's going to be a father, Lily says "congratulations Papa". Barney's actor Neil Patrick Harris is called Papa by the two children he shares with his husband David Burtka because, as Neil puts it "instead of being Daddy 1 and Daddy 2 like we're Dr Seuss characters, he's Daddy and I'm Papa".
25. Strangely enough, Ted and Tracy have no family members attending their wedding, and none of Tracy's friends attend. Also, only four of Ted's friends attend the wedding, despite the fact that previous episodes have established that he has many other friends.
26. Barney has a daughter called Ellie with an unknown woman. The name Ellie may be a reference to her similarly-named cousin Eli Stinson, who as a baby also caused Barney to have a change of heart in Single Stamina.
27. As of April 2019, this episode has the lowest rating in the series due to its ending that made fans angry.
28. This episode opens up the possibility of Robin and Ted dating in 2030.