When was the American stand-up comedian who was a supporting cast in "Who's the Caboose?" born? 
David Cross: David Cross (born April 4, 1964) is an American stand-up comedian, actor, director and writer, known primarily for his stand-up performances, the HBO sketch comedy series "Mr. Show", and his role as Tobias Fünke in the sitcom "Arrested Development".
i don't know