Unreal use of light

Maybe some of you have seen this commercial already. If you haven't you're in for a real treat. Actually this video is sort of a "making of" that shows a bit of the background of how the Sprint spot was created. Having done a little light painting I am absolutely blown away at the complexity (not to mention creativity) of this....just incredible stuff!!

In case your browser has an issue with the embedded video, here's the link.