Yes people, stunning 3D effects can happen without wearing one of those motorcycle helmet-sized doodads. Who knew that Head Tracking for Desktop VR Displays using the WiiRemote was actually possible? That would be Johnny Chung Lee of Carnegie Mellon University, who, by the way, is so very adept at explanatory speaking!
Using the infrared camera in the Wii remote and a head mounted sensor bar (two IR LEDs), you can accurately track the location of your head and render view dependent images on the screen. This effectively transforms your display into a portal to a virtual environment. The display properly reacts to head and body movement as if it were a real window creating a realistic illusion of depth and space.