Well, some new innovation from MS - Photosynth (http://labs.live.com/photosynth).
[Piazza San Pietro collection ]
Very very cool concept. It is not only a simple stiching of photos but look at the overall view that is drawn with the subtle grainy dots. I had seen the initial preview when it came out but it is nice to see that MS came out with the Tech Preview so early. This is a new world as we know of.