Jason Segel, Zach Wahls, Fun : Season 19 Episode 57
CBS
Aired: December 13th, 2011 @ 7:00 PM EST on CBS
Dave welcomes Actor Jason Segel from the CBS comedy series 'How I Met Your Mother,' author Zach Wahls, musical guests Fun, and a Top Ten List presented by Chicago White Sox perfect game pitcher Philip Humber.
