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

Ted encounters one of Robin's dates sitting naked on her couch, and the guys conclude the unorthodox approach might... Full summary

Robin reunites with a group of party-hearty single girlfriends known as the "Woo Girls." Meanwhile, Ted... Full summary