These tiny (4 millimeters on a side) robots are members of the I-SWARM project, which stands for Intelligent Small-World Autonomous Robots for Micro-manipulation. Each robot is simple, with three legs and a little poker to manipulate stuff with. They're designed to work in large, cheap, mass producible, replaceable groups doing things that insects would be good at... Surveillance, obviously, but they could also do things like clean your house by taking care of one bit of dust each.
No, really, this isn't necessary. If I wanted teeny little robots running around everywhere I would have killed myself and gone to hell. Because that's exactly what it's like. Except they're on fire. And they crawl in your holes.
I-SWARM Micro Robots [botjunkie] (the very thought of which makes me sick)
Thanks to Nick, Michael, MDGrein, Ashley and Skynet (screw you!), who are all cool in my book. Except for Skynet. Skynet should implode.