Jack Hanna part 1
Jack Hanna on The Late Show with David Letterman (July 31st, 1987)
Jack Hanna and His Friends on David Letterman
David Letterman Jack Hanna June 2nd 2009
Jeff Musial Creeps Jimmy Out with Mexican Tarantulas
David Letterman - Jack Hanna 02/12/1998 - Butt Sniffing Monkey
Dave responded to Jay's "Don't Blame Conan"
Lettermans Greatest Moments - Dave at Taco Bell