If you only know John Cleese as the voice of King Harold in Shrek, we feel really sorry for you. We feel even worse if you have no idea who John Cleese is. The hilarious star of a many Monty Python films made what was, at the time, the funniest series of computer commercials for Compaq's all-new DeskPro. Going through all of them it really seems as if Compaq left Cleese to do whatever the hell he wanted to do. Companies, take note.