Playing Tetris using your cell phone and a dorm. Sadly, the neither the guy playing nor the guy holding the video camera are very good. (They're actually planning to do other stuff, but couldn't resist doing the whole mega-video game thing.)
And a Pac-Mac Christmas tree. Very cool until you realize it's kinda lame in that it's not animated, just blinky. Well, actually, Blink's not all that animated either.