Late Show with David Letterman
Matt Damon, Marc Maron
E169 Jun 14, 2002 TV-PG
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.
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