First Stupid Pet Tricks on The David Letterman Show, June 26, 1980
12:24
1983 David Letterman Stupid Human Tricks
8:50
Stupid Pet Tricks on Letterman, September 24, 1985
10:57
David Letterman Kid Scientist Volume 6 2009
8:14
David Letterman Daniel Tammet Mathematics Genius Prodigy | Free slideshow @ www.j.mp/BharatanMaths
8:22
Stupid Pet Tricks: The Talking Dog Says "I Love You" | Letterman
19:25
David Letterman On "Late Night With Conan O'Brien" 02/28/94 | Late Night with Conan O’Brien
9:12
Stupid Human Tricks on Letterman, May 26, 1986
6:54