Using your built-in portable motion sensor for a game!
I think this is a very innovative way of building a game. The game called Wally Bally uses the motion sensor that is built-in to every new portable Mac as controls for the game. The game is very simple, but I think it is more about the concept than the real game experience. I was surprised how precise the motion sensor is, because I know Apple only added this to protect the hard drive in case of a fall. The developer says it works on MacBook, but I assume it also includes MacBook Pro and PowerBook that have the motion sensor. The game unfortunately does require Mac OS X Leopard. The game is not in English, but it really doesn't matter. You can check it out here on MacUpdate.