Animating With Light

You may have seen still photos where people paint with light. Basically, it’s a long exposure taken at night, and somebody is waving a light source around in a pattern. The long exposure means that the camera sees the path of the light source, so the net effect is a shape painted with light.
Well, today I came across this animation on Zooomr, which takes the idea of painting with light to a new level. I can’t imagine how much time this must have taken to put together, but is is pretty impressive. Check it out.