Sunrise: On the eve of the wedding, Ted and Robin take a walk on the beach and have a heart-to-heart conversation. Marshall finds out that his hotel room is haunted. (S9 Ep17/24) [AD,S]
Rally: Barney can't get out of bed on the morning of his wedding because he had too much to drink the night before, so the gang try to make him a famous hangover cure. (S9 Ep18/24) [AD,S]
Vesuvius: On the morning of the wedding, Ted helps a stressed Barney decide which suit to wear. Lily thinks Robin isn't treating her big day with the gravity it deserves. (S9 Ep19/24) [AD,S]
Daisy: Marshall tries to work out where Lily went when she stormed out of the hotel on the night of their big fight. Robin is worried by Barney's pre-wedding behaviour. (S9 Ep20/24) [AD,S]
Gary Blauman: When an old friend of the gang, Gary Blauman, shows up at the hotel for Robin and Barney's wedding unexpectedly, the seating plan is thrown into disarray. (S9 Ep21/24) [AD,S]
The End of the Aisle: With only 30 minutes before the wedding, both Robin and Barney are having panic attacks, and Lily and Marshall think about their own wedding vows. (S9 Ep22/24) [AD,S]
Last Forever (Part 1/2): With Barney and Robin's wedding day over, Ted says goodbye to the gang and prepares to leave for a new life in Chicago, but fate has other plans. (S9 Ep23/24) [AD,S]
Last Forever (Part 2/2): The gang are seeing less of each other, but reunite one more time for Ted's wedding. A huge event in his personal life leads Barney to change his ways. (S9 Ep24/24) [AD,S]
How I Met Everyone Else: Ted's new girlfriend becomes jealous that the story about how Ted and his friends met is better than the one about how she met him.
Little Boys: Lily sets Robin up with the father of a pupil. Though hesitant at first, Robin agrees and soon bonds with his son, making it difficult when she dumps his dad.
Bachelor Party: Marshall is fuming when Barney ruins the sedate stag do that Ted had organised by getting a stripper, and he considers asking him to stay away from the wedding.
Showdown: Lily and Marshall decide to live apart for the fortnight before their wedding, while Barney is ecstatic to appear as a contestant on The Price Is Right.
Moving Day: Barney steals Ted's removals van with his belongings in it when he discovers that he's moving in with Robin. He makes Ted complete challenges to get it back.
Arrivederci, Fiero: Marshall, Ted, Lily and Robin are sad when they learn that Marshall's trusty car is broken and reminisce about their adventures in it.
Monday Night Football: When the gang are invited to a funeral on the same night as the Super Bowl they come up with a creative solution to the problem.
Something Blue: At Marshall and Lily's wedding, Barney overhears Ted and Robin discussing a secret. He wheedles it out of them and learns that they have split up.
Something Borrowed: When Marshall and Lily's plans for their dream wedding go awry, their friends save the day and give them the low-key ceremony they've dreamed of.
Showdown: Lily and Marshall decide to live apart for the fortnight before their wedding, while Barney is ecstatic to appear as a contestant on The Price Is Right.
Moving Day: Barney steals Ted's removals van with his belongings in it when he discovers that he's moving in with Robin. He makes Ted complete challenges to get it back.
Arrivederci, Fiero: Marshall, Ted, Lily and Robin are sad when they learn that Marshall's trusty car is broken and reminisce about their adventures in it.
Stuff: Lily's irked when Barney gives harsh criticism of her performance in a play. Ted and Robin fall out when they discuss what to do with 'stuff' left behind by ex-partners.
Monday Night Football: When the gang are invited to a funeral on the same night as the Super Bowl they come up with a creative solution to the problem.
Columns: Ted struggles to fire his belittling former boss Hammond, who is now working for him. After three failed attempts to sack him, Hammond has a heart attack.
Single Stamina: Barney is struggling with the fact that his friends are all in relationships. Then his brother arrives for a visit and reveals that he is settling down too.
Slap Bet: Robin's refusal to go to the shopping mall piques Ted's interest as to why she dislikes them so much. Marshall and Barney propose a 'slap bet' to discover the reason.
Atlantic City: Lily and Marshall are ecstatic to be reunited and plan to elope to Atlantic City to get married. Will their wedding plans go without a hitch?
Swarley: Barney is accidentally called Swarley by Chloe, the coffee house waitress, leading an amused Ted and Marshall to call him by this name all day.
World's Greatest Couple: Lily moves into Barney's flat to escape her rat-infested home. The two fall asleep in each other's arms but feel awkward when they wake up.
Brunch: Ted and the gang have brunch with his parents. Robin worries that Ted's mum doesn't like her but realises that isn't the case when a huge secret is revealed.
Columns: Ted struggles to fire his belittling former boss Hammond, who is now working for him. After three failed attempts to sack him, Hammond has a heart attack.
First Time in New York: Robin's teenage sister Katie comes to stay. Robin discourages Katie from losing her virginity, which prompts the gang to recall their first experiences.
Single Stamina: Barney is struggling with the fact that his friends are all in relationships. Then his brother arrives for a visit and reveals that he is settling down too.
Slap Bet: Robin's refusal to go to the shopping mall piques Ted's interest as to why she dislikes them so much. Marshall and Barney propose a 'slap bet' to discover the reason.
Atlantic City: Lily and Marshall are ecstatic to be reunited and plan to elope to Atlantic City to get married. Will their wedding plans go without a hitch?
Swarley: Barney is accidentally called Swarley by Chloe, the coffee house waitress, leading an amused Ted and Marshall to call him by this name all day.
Aldrin Justice: Barney seduces Marshall's professor in the hope that she'll give the class higher marks, but she ends up grading Barney's performance in the bedroom.
World's Greatest Couple: Lily moves into Barney's flat to escape her rat-infested home. The two fall asleep in each other's arms but feel awkward when they wake up.
Ted Mosby: Architect: Ted and Robin have their first big argument after Robin becomes annoyed at hearing Ted's work grumbles, so Ted's pals try to prove that he's not dull.
Brunch: Ted and the gang have brunch with his parents. Robin worries that Ted's mum doesn't like her but realises that isn't the case when a huge secret is revealed.
The Scorpion and the Toad: Marshall has a string of ill-fated nights out with Barney in a bid to meet new women. He eventually goes on a date, but bumps into Lily.
Where Were We?: Ted's romantic luck is bolstered by his new relationship with Robin, who has yet to reveal her love of guns. Marshall is feeling down after his split from Lily.
Come On: Barney slaps Ted when he says he wants to pursue Robin. Later, in frustration at Robin's camping trip with Sandy, Ted performs a rain dance to keep her at home.
Mary the Paralegal: It's the night of Robin's award ceremony. Ted feels blue when he discovers who Robin is taking, so he agrees to let Barney set him up with an escort.
Milk: It's Ted's 28th birthday and he gets a call from the matchmaking service saying they've found his dream woman. Unconvinced, Ted realises that Robin is the one for him.
Life Among the Gorillas: Marshall has a tough first day at Barney's office and feels like a square peg surrounded by colleagues with obnoxious outlooks on life.
Best Prom Ever: Marshall and Lily's dream wedding venue becomes free and they set a date for their nuptials. Lily, however, worries that she's not ready to get married.
Cupcake: Ted and Victoria face their first relationship challenge when Victoria is offered a job in Germany. Marshall and Lily find themselves in some bother.
Game Night: Marshall invents a new game - Marshgammon - after winning previous game nights. Unfortunately no one but Marshall understands how to play it.
The Scorpion and the Toad: Marshall has a string of ill-fated nights out with Barney in a bid to meet new women. He eventually goes on a date, but bumps into Lily.
Where Were We?: Ted's romantic luck is bolstered by his new relationship with Robin, who has yet to reveal her love of guns. Marshall is feeling down after his split from Lily.
Come On: Barney slaps Ted when he says he wants to pursue Robin. Later, in frustration at Robin's camping trip with Sandy, Ted performs a rain dance to keep her at home.
Milk: It's Ted's 28th birthday and he gets a call from the matchmaking service saying they've found his dream woman. Unconvinced, Ted realises that Robin is the one for him.
Mary the Paralegal: It's the night of Robin's award ceremony. Ted feels blue when he discovers who Robin is taking, so he agrees to let Barney set him up with an escort.
Life Among the Gorillas: Marshall has a tough first day at Barney's office and feels like a square peg surrounded by colleagues with obnoxious outlooks on life.
Cupcake: Ted and Victoria face their first relationship challenge when Victoria is offered a job in Germany. Marshall and Lily find themselves in some bother. [AD]
Game Night: Marshall invents a new game - Marshgammon - after winning previous game nights. Unfortunately no one but Marshall understands how to play it. [AD,S]