Dave Gorman
Biography
Comedian and author most famous for taking on bizarre challenges like finding 54 other people called Dave Gorman, creating a worldwide chain of "Googlewhacks", living strictly by the recommendations of newspaper horoscopes for 40 days, and playing the entire Moldovan football team at tennis. Actually, that last one might have been Tony Hawks. But you get the idea, anyway.
Trivia
A couple of his early escapades were collaborations with Danny Wallace, who went on to some gameshow fame of his own.