Found this interesting video about the J-dome, a device that projects your screen on to a dome allowing for a much more realistic experience. With the amount of screen space it provides, it doesn't seem that expensive.

I picked up this video from smashing magazine, click the link to see 9 more futuristic user interfaces



I had to put this quick on in here too. Just like Johnny Lee's head tracking trick with the wii mote, here is the same thing, except all you need is a webcam.

So, who will be the first company to jump on this level of immersion?