Came across this and was pretty impressed. Not sure how synced the whole thing actually (using some Kinect magic – my guess is that the music was being danced along to , with a healthy dose of editing licence afterwards) was but for sheer effect it’s right up there.

Very similar work at the Vivid Festival in Sydney each year, though the last one at the opera house actually had a very similar system. Here’s Customs House gettin’ the treatment.