Gizmodo held a contest through this past weekend -- alter photos from the Olympics.
The winners were announced today in a posting headed, "135 Ways to Ruin the Olympics Using Technology."
The only caveat given is this: "If your entry didn't make it into the following gallery, it's probably because you included a lightsaber in there somehow. I got about 30 entries of fencing with lightsabers, so don't feel bad that yours didn't make it in."
Some very funny stuff there, and some excellent Photoshop skills at work. Check it out.