This is sooooo cool. And it’s not Flash. I want to know how it was done. You can throw a ball against the others and watch them bounce. Double click the background and get more balls. Go to the Harmony screen and draw stuff.
http://mrdoob.com/projects/chromeexperiments/ball_pool/
Update: Whoa. All Mr. Doob”s stuff is cool. http://mrdoob.com/