 He began appearing on numerous TV shows such as "Evening at the Improv", "Make Me Laugh" and others and made his first appearance on "Late Night with David Letterman" in 1987.He appeared on the Late Show with David Letterman on July 25, 2008, setting the record for the longest time in between appearances (over 20 years).He is a regular at the San Francisco Punch Line, Rooster T. Feathers, and The Throckmorton Theater in Mill Valley.