Sure, you've seen robots dance before, but you've never seen them dancing like this—shimmying, sliding, and sashaying, just like humans, in perfect synchronization. It's just like Bring It On, only slightly less robotic.

OK, so it's not really America's best—the dance party went down at Shanghai 2010 Expo, where 20 Nao robots, designed by the French team Aldebaran Robotics, synchronized over Wi-Fi to strut their stuff. The robots come kitted with "x86 AMD Geocode 500 Mhz CPU, 2 GB flash memory, two speakers, vision processing capabilities, Wi-fi connectivity and ethernet port," and respond to commands in both English and French, like this: "STOP DANCING BETTER THAN I EVER WILL." [PopSci via Geekoysystem]