Bill Cosby, Jon Favreau
Show: Late Show with David Letterman --> Season: 6 - Season 6
AirDate: 5/14/1999
Runtime:
Voting: 0 (0)

Overview: With tonight's audience being from the City of Brotherly Love, Biff heads to Philly to get in training a la Rocky. For his efforts, he is given a medal by Philadelphia Mayor Edward Rendell and Sylvester Stallone's brother Frank.