Late Show with David Letterman S9E169 Matt Damon, Marc Maron

Watch Late Show with David Letterman Season 9 Episode 169 Online – Biff does his pushpin schtick live from the Grand Canyon, and Dave persuades him to yell "Hey, Mommy!" just to see if there's an echo. Also, Paul does a somewhat convincing James Brown impression, suffers a nervous breakdown onstage, and Dave comes by to bring him his cape.