Late Show with David Letterman

Season 8, Episode 172

Episode Title: Chris Elliot, Harry Hill

Air Date: 2001-06-22

Overview:

Mailbag: "What would you do if the world was coming to an end?" Dave admits he doesn't know much about this topic, so he introduces astrophysicist "Dr. Saul Perlmütter" (Gerard), who announces that the world will end somewhat earlier than was previously thought; around Labor Day 2001, an eerie prediction.