Ted (Josh Radnor) continues his search for true love in the sitcom's sixth series. Meanwhile, Marshall (Jason Segel) and Lily (Alyson Hannigan) try to get pregnant with their first child; and Barney (Neil Patrick Harris) finds his long-lost father (John Lithgow). Cobie Smulders also stars. The series' guest stars include Katy Perry and Jorge Garcia.
First aired: 2010-09-20