I remember photoshopping a shotgun toting santa with a captive elf workforce, and creepy, stained, jaundiced santa trying to entice children, but I don't have the pics anymore.
On a not entirely unrelated note, apparently two santas from local shopping centres here were exposed as paedophiles. In one centre, the Santa now has to say something ridiculous to parents like "The child will only sit on my knee with your consent and [blah blah more terms and conditions]".