Cool-mo-dee recently turned me on to the Obamicon site where you can easily take any picture and turn it into the iconic Obama poster. I have to confess that I got carried away and started trying it with pictures of everything from Tusken Raiders to Isaac on The Love Boat.
Of course, there's really no limit to the amount of time you can waste playing with pictures on the internet. For instance, there's the Warholizer, turning any lame picture into an Andy Warhol artwork.
Ahhh, the internet. It really does make you stupid!