The Golem Project is a very cool experiment in simulated evolution. A computer was given a physics model and some basic parts, such as tubes, hinges, and pistons. The program then randomly "evolves" creatures, starting from a basic tube and adding stuff to it. The goal is motion, and the program is very cool. The URL of the project is: http://golem03.cs-i.brandeis.edu/index.html. Check it out and get your own Golem.