Gotcha!
Free Republic poster Sloth has conclusively identified the double used in the purported Saddam video:Which reminds me. Another poster on Free Republic asked today what Saddam's doubles do when they aren't filling in for the Big Boy. Do they have regular jobs or do they just hang out? I think it must be the latter, because it would be rather jarring to have your waiter or accountant or taxi driver look like Saddam.
I also can't help but wonder if they have families. The other kids at school sure wouldn't give you any guff if your Dad was the spitting image of a barking mad dictator!
UPDATE: Dang it! Terpsboy beat me to it, but he has his own theory. It involves toilet paper.