Marshall enlists Ted and Barney to help him figure out where Lily went when she left in the middle of their fight. (TV-14 D, L)
On the morning of the wedding, Lily and Robin have a fight and Barney freaks out about which suit to wear. Meanwhile, the gang watches a movie Ted has forbidden them to see. Lucy Hale, Chris Kattan, and Jon Heder guest star. (TV-14 D, L)
When Barney suffers from the world's worst hangover the morning of his wedding, the gang tries to figure out the far-fetched ingredients to concoct the Stinson Hangover Fixer Elixir. (TV-14 D, L)
When Robin and Loretta's conflict escalates, Barney is caught in the middle. Meanwhile, Marshall and Daphne deal with a stowaway on their road trip, and Ted and Cassie try to enjoy a trip to a lighthouse. (TV-14 D, L)
Season 4, Episode 22 (Right Place Right Time): Ted explains to his future kids how a series of unrelated events led to a chance encounter with a former girlfriend. Barney makes the 200th notch in his bedpost.
Season 4, Episode 21 (The Three Days Rule): When Ted violates the "three days rule" by continually texting with a girl he's just met, Barney and Marshall retaliate by impersonating her.
Season 4, Episode 20 (Mosbius Designs): Ted goes out on his own as an architect and hires an intern, but all he helps himself to is Robin. News of layoffs at GNB has Marshall looking for a schtick to make himself indispensable.
Season 4, Episode 19 (Murtaugh): Barney tries to complete, in one day, all the tasks from a list Ted made to prove the gang's not too old to do. Meanwhile, he challenges Ted to complete a list of things they're too young to do.
Season 4, Episode 18 (Old King Clancy): Marshall and Barney lie to keep Ted from finding out the headquarters he'd been hired to design has been canceled.
Neil Patrick Harris invites you to say farewell to How I Met Your Mother by sending in your tweet, Facebook post or Instagram using #HIMYMFarewell.
When Gary Blauman shows up at the wedding, it sends the gang into a frenzy as they each recall an encounter with him, on the final season of How I Met Your Mother, Monday, 8/7c. Wayne Brady and Taran Killam guest star. Only CBS
Marshall sings the classic, "You Just Got Slapped"
Mary Beth and Natalie join the limo party.
Ted laments becoming the guy who tells people what to do.
Barney has a difficult time pleasing Marshall's professor in bed.
Ted gets drunk and immediately starts drunk-dialing Robin and making a fool of himself at the local bar, but his friends like it.
How I Met Your Mother: Glitter clip - starring Josh Radnor, Jason Segel, Cobie Smulders, Alyson Hannigan, Neil Patrick Harris, Bob Saget. Directed by Pam Fryman.
Ted and Robin talk about their first fight.
Robin tells Ted that she's secretly married to a Canadian.
Ted and Marshall discuss his imminent engagement.
1980's Canadian pop sensation Robin Sparkles sings her hit single "Let's go to the Mall"
Ted and Barney hit the bar and remember how they met while playing a game of "Have You Met Ted?"
Marshall and Ted pray that Tivo record the Super Bowl, or they will destroy Tivo.
Lily and Robin find out that the man laying in bed is not Ted Mosby.
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