Late Show with David Letterman S11E101 · Bill Cosby, Toby Lightman

Late Show with David Letterman

Season 11 · Episode 101 · Bill Cosby, Toby Lightman

On "Audience Show & Tell," Dave make his contribution to an audience member's collection of gum chewed by celebrities; "Will It Float?" sinks a tray of billiard balls; Bill Cosby does stand-up; Lou Reed capes; Toby Lightman sings.