The gang tries to help Ted when the perfect woman (Joanna Garcia) becomes available; Marshall finds a letter written... Full summary

Marshall bequeaths a "slap bet" slap to Ted and Robin; Lily's estranged father (Chris Elliott) visits for... Full summary

After breaking up with Robin, Barney pulls out all of his greatest tricks to get back into the dating scene.

When Robin and Barney hit a rough patch in their relationship, Lily tries to break them up.

Barney's know-it-all attitude gets him in hot water with Robin; Marshall and Lily offer relationship advice.

Barney wants Robin to become an American citizen; Lily joins Marshall and Ted on their road trip.

Lily and Marshall come on too strong to impress Robin and Barney, who then try to break off the double-dating.

Robin investigates when she thinks Barney is cheating on her, only to find that he is spending his time with Ted,... Full summary

Ted realizes that the girl he goes on a blind date with is actually someone he dated years earlier, and that they... Full summary

Lily forces Barney and Robin to face their fears about defining their relationship; Ted is anxious about his first... Full summary

In the fourth-season finale, Ted works feverishly to promote his business while Marshall tries to get him to the roof... Full summary

An acquaintance of Ted's feels guilty about a previous wrong and tries to atone for it by helping Ted get a... Full summary

Ted runs into an old flame and learns a life lesson about destiny. Meanwhile, Barney celebrates his 200th. No need to... Full summary

Ted starts texting a woman (Rebecca Budig) he recently met, breaking one of Barney and Marshall's relationship rules,... Full summary

Ted sets up his architecture firm in his apartment and hires an intern, who ends up getting a little too chummy with... Full summary

Ted's list of "things the gang's too old to do" prompts Barney to attempt everything on the list within 24 hours just... Full summary

Barney and Marshall dream up an intricate lie to protect Ted from finding out he's lost an important job. ~ Bill... Full summary

When Ted's girlfriend, Karen (Laura Prepon), finds a woman's earring in his bed, Ted learns that Lily put it there.... Full summary

Ted reunites with his college girlfriend (Laura Prepon), prompting Lily and Marshall to reveal how much they... Full summary

When Barney inexplicably leaves MacLaren's, the gang thinks he has a girlfriend. ~ Bill Ecklund, All Movie Guide

Robin has only four days to find a job or she'll be deported, and Barney steps in to help by producing her video... Full summary

A blizzard hits the city as Lily is returning from a trip to Seattle, threatening an airport-reunion ritual between... Full summary

Ted invites his friends to Stella's New Jersey apartment, and he tries to convince them that living outside the city... Full summary

Ted's younger sister visits, and he does everything in his power to keep her away from Barney. Meanwhile, Marshall... Full summary

Ted and Barney pick a fight with guys sitting in their favorite booth in an attempt to change how their friends... Full summary