Combining the Kinect 3D realtime mapping with Oculus Rift 3D Goggles. This is pretty darned amazing. This is going to have huge applications in the Augmented Reality world. Can you imagine? Just do a 3D scan of the space, let the Kinect do the mapping, then pull the whole model into the Oculus Rift environment, and then you can start marking up/overlaying whatever objects, info, data that you want within that model. The more time it takes Oculus Rift to be released and marketed, the more potential applications people seem to invent for it.