Late Show with David Letterman

Greg Kinnear, reptile expert Dr. Darrel Frost, Tapes 'n Tapes

A short comedy bit involving Dave, Sue Hum, and a bowl of gazpacho is botched; Dave examines Scarlett Johansson's teeth; the Teutel Boys from "American Chopper" show off their newest souped-up cycle, the OCC Splitback.