More reason to get a Wii!
The hacking community behind the Wii is simply amazing. This post at WiiHacks is a good summary of some of the apps that have come out of the recent breakthroughs with the wiimote. Playing the "guitar" with two wiimotes, navigating Google Earth, transfering Miis off of the wiimote, and more! Some people are even controlling FrontRow with it. People haven't figured out how to parse the data coming back from the nunchuck, but I don't imagine it'll take too long. Something to definitely stay tuned to!
D00d, I was thinking about how Guitar Hero could be done on the Wii, and I think that's about how I imagined it could be done. AWESOME!