Late Show with David Letterman S19E57 · Jason Segel, Zach Wahls, Fun

Late Show with David Letterman

Season 19 · Episode 57 · Jason Segel, Zach Wahls, Fun

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.