This video has been circulating the web for a while now, but I just rediscovered it. Johnny Lee, a PhD student at Carnegie Mellon, has developed a nifty 3D virtual reality setup that uses a Wii remote and sensor bar.
At Lee’s website he demonstrates other clever uses of the Wii, including a nice interactive whiteboard.
This guy is a very cool genius type dude. If you haven’t already, check out his own website and his other Youtube videos.