Are you into robotics? You should then take a look at the Galatea project by Francisco Javier Suvires. He has been working with this for some time, his original platform was not programmable from the Arduino IDE, but after a conversation at Campus Party 2009, he got convinced about the potential of using our IDE to create code for his machines. A bit more than a week ago he sent me this video:

You should check out the rest of his video material on Youtube and  visit his blog. He’s got quite a nice collection of robots both autonomous or remote-controlled.