This is the coolest thing ever. http://www.cs.cmu.edu/~johnny/projects/wii/ This guy uses the infrared camera in a Wiimote to do a bunch of cool stuff. The best part is you can download the programs and do it yourself. Most of the stuff doesn't even need a Wii, just a Wiimote and a bluetooth receiver for your computer. I'll be working on this when I get home from work today.