Harvard's Kilobot project does swarm robots on the cheap (video)

We've certainly seen plenty of swarm robots before, but few of those are cheap enough to let you easily build something that can truly be called a "swarm." These so-called Kilobots developed by Harvard's Self-organizing Systems Research Group, however, can apparently built for just $14 apiece, and can each be assembled in just five minutes to boot. Despite that low cost, the bots are still capable of plenty of swarm-like behaviors, including the ability to follow the leader, disperse in an environment, put on a synchronized LED light show. Head on past the break for a pair of videos.