Cool self-reconfiguring robot: Polypod: Example Locomotion with Reconfiguration. They’ve really built a prototype of this robot, but the niftiest stuff is in the movies of what they might be able to do some day. It’s creepy to watch this robot walk like a caterpillar, then crawl like a snake, then mutate into a spider-like tetrapod. But don’t worry. It’s just a movie. For now.