That is one of the coolest uses of the web i've ever seen, lol. There's a huge thing, kind of like that (except for the lasers and the guys head becoming a ball), at the Boston Museum of Science- As a kid, I used to sit in front of it for an hour watching the path of the balls. I'm totally ADD now, probably a mental reaction to wasting too much time as a kid from that damn intoxicating bewildering mesmorizing creation of the biggest acid head besides Buckminster Fuller.