"Robin 101" -- Robin (Cobie Smulders) fears that Barney (Neil Patrick Harris) is cheating on her, she soon discovers that he is spending his evenings with Ted learning everything there is to know on how to date her, on HOW I MET YOUR MOTHER, Monday, Oct. 5 (8:00-8:30 PM, ET/PT) on the CBS Television Network. Alyson Hannigan (left) stars as Lily. Photo: Eric McCandless/Fox ©2009 Fox Studios. All Rights Reserved.

"Double Date" -- Barney (Neil Patrick Harris) takes Marshall (Jason Segel), and Robin (Cobie Smulders) to a strip club where they find a stripper who looks almost exactly like Lily (Alyson Hannigan) on HOW I MET YOUR MOTHER, Monday, Sept. 28 (8:00-8:30 PM, ET/PT) on the CBS Television Network. Photo: Cliff Lipson/CBS ©2009 CBS Broadcasting Inc. All Rights Reserved.