Our team is hosting a new kind of LEGO competition that combines general LEGO building with robotic sumo competitions. The general idea is that two robots, no larger than 6" x 6" x 6", are placed on a circular surface and essentially attempt to shove the other out of the ring. The bots must be entirely autonomous and made of LEGO parts (except for these sweet little "eyes" made to go with the RCX sets). We're holding a four hour competition next Sunday during a local festival.
Full information, pictures, rules, and video
here.