Who is the worst villain: Saddam Hussein, Osama Bin Laden or Adolf Hitler?

Without a doubt it was Hitler. His record for extermination of innocent people makes the others' pale by comparison. Mind you while Saddam was a nasty dictator Bin Laden would have had no hesitation in using a nuclear device if he could have got his hands on one. We should be grateful he's now with his 72 virgins. If god has a sense of humour, they'll all be ugly, extremely macho and male.