The folks over at 2pie blog have a pretty neat idea: make a snow print by pushing their faces into fresh powder on cars. The images are all concave, but make for an optical illusion of 3D sculptures!
I saw this circulating on the Net a few days ago, but didn't get the chance to post it till now. Better late than never! Link
These things are ridiculously easy to make - when the snow is right.
Second, about the karate chop and not being able to make fingers. If you look closely, you can tell that the person didn't do a karate chop, but just layed his hand flat on the snow but curved his fingers a little, but the left guy is definately making a karate chop.
Third, about the snow collapsing when they got up. If the snow was wet, it wouldn't do that. The person who posted this was just wrong about the snow, it wasn't powder snow, it was wet snow. Wet snow also makes it easy to make detailed imprints for the same reason.
Forth, about being lowered. You can easely do this without needing to be lowed by monkeybars or whatever, by laying yourself on the hood of the car in a worm like motion.
Other give-aways that make this pictures real is the left guy, who did a poor job at imprinting himself, because the face isn't very good; the arms of both people are obviously concave, and dont look 3-D at all; the neck of the right person looks concave as well and not 3-D; and where the other arms are Suposed to go looks very odd because they aren't in the snow, so that a third person can lift them up when they are done.
This picture is soooo realy!