Acrobots are little 3-legged acrobatic bots that hop and jump around and react to each other. Use the controls on the right to influence their number or the force of gravity upon them. Together they form an unsual webtoy that includes impressive physics as well as some very fluid animation. Very nicely done by the same Patrick Smith (Vector Park) that brought us Levers, and the recently reviewed, Feed the Head. Simply amazing.
Cheers to Manax, Sean, and Jesse for the discovery.