"The Naked Truth" -- Martin Short rehearses with Jason Segel to prepare for his guest appearance on HOW I MET YOUR MOTHER, at a special time, Monday, Sept. 19 at (8:30 PM, ET/PT), on the CBS Television Network. #HIMYM Photo: Cliff Lipson/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved.

"The Naked Truth" -- Martin Short rehearses with Jason Segel to prepare for his guest appearance on HOW I MET YOUR MOTHER, at a special time, Monday, Sept. 19 at (8:30 PM, ET/PT), on the CBS Television Network. #HIMYM Photo: Cliff Lipson/CBS ©2011 CBS Broadcasting Inc. All Rights Reserved.