1992 - Stupid Pet Tricks with Pork Chop and Bacon )

Dave's Mad Monkey Tea Party | Letterman

1987 - Stupid Pet Tricks

Stupid Human Tricks on Letterman, January 14, 1987

David Letterman Kid Scientist Volume 6 2009

Stupid Pet Tricks.. One Real Smart Dog and One That Tries Hard:)

Letterman | Stupid Human Tricks | 1987

Late Night With David Letterman Stupid Pet Tricks October 1983

Top Ten Stupid Pet Tricks | Letterman

Stupid Human Tricks - Congratulations! You're Gifted

Stupid Pet Tricks, Montana opens & shuts car door

1992 - Stupid Pet Tricks with Sterling (my favorite trick)

Stupid Pet Tricks: The Beer-Buying Dog, A Stupid Cockroach Trick And More | Letterman

Stupid Human Tricks: Extreme Pogo Stick Challenge | Letterman

First Stupid Pet Tricks on The David Letterman Show, June 26, 1980

Stupid Human Tricks on Letterman September 4, 1984

Stupid Pet Tricks on Letterman, March 29, 1984

Kids Tell Jokes on Letterman, June 9, 1992

1988 - Stupid Human Tricks (Dave Does One)

David Letterman Show - Stupid Pet Tricks