I have just seen the future of interaction design and here it is: Head Tracking for Desktop VR Displays using the WiiRemote
This presentation shows quite simply how a flat 2D screen can be transformed into a window into a 3D world. Although this demo is based on the Wii and it's unique controllers, you can see how this technology can be adapted for broader use. Watch this video, then imagine all the ways that this interface can be used. E commerce? Someday I will be able to shop for shoes in 3D! Social Networks? What if Hot or Not was in 3D? or Match.com. Oh the possibilities!