Recently I tried Oculus at the local Dave & Busters and played an offroad'n driving experience. It was a pretty realistic game and visual experience. I nearly got sick using them which was probably more due to the offroad'n style game that moved me display in unexpect ways that left me twirled. So perhaps that game wasn't my cup of tea, but the idea is clear, as your head physically moves in orientation, the stereoscopic goggles adjust your visual perspective to provide a first-person 3D virtual reality that is quite a uniquely real experience.
The user interface of the future isn't here yet; but when it comes, I honestly think Microsoft is well positioned with Kinect which comes loaded with the ability to detect a persons gestures from across the living room to control a television... now there you've got it. Unfortunately any even if Microsoft has a leg up, they will fail to take it to the next level and it will be another 10 years until someone else does it.