This is a really fun little interactive application. With this particular one you throw the ball around and this crazy little thing with 3 legs goes around and follows it. Your able to throw the ball up and down and in the infinite space its really awesome because there is a shadow which gives you a grounding feeling.
There are also a couple variations off of this at the bottom of the page. All have the same graphic quality and programming feel. Its pretty clear that much of the same code was used to generate these multiple programs. Still one of the best parts of processing and coding like this is the ability to change one variable and get vastly different results.