Wow. Take a look at PhotoSynth [http://labs.live.com/photosynth] – Imagine if this was taken worldwide. I'm imagining an image-based positioning – your pictures could get automatically geo-tagged and if they were in a public collection you could find other images of that location. Virtual Earth integration… I wonder how related to the VE local image system this is. Based on shadows/star placement, it could even derive the time of day/night. Of course, most digital cameras know what time it is. What if they could stitch in the time dimension to it, so I could take a series of pictures outside and tween the series and play a movie of grass growing. This could also be useful for someone trying to edit an element out of a photo, by finding another photo shot from a transformable location without the element. Imagine a cloud of little unstable flying drones that swarm an area, take pictures and PS builds a world that you could walk through in virtual reality. Perhaps image enhancement based on several images of roughly the same thing. What about doing this to video? Stitch together a 3-D movie of an event from a hundred spectators' camcorders. Yeah, wow.