You’ve probably seen YouTube videos of a “Flash Mob” – a group of people who at first seem to be just part of the crowd at a train station (or other public space), who suddenly gel as if by magic into a well-choreographed song and dance routine, purely for the thrill and entertainment value. Check out this union’s attempt: [flashvideo provider=youtube file=http://www.youtube.com/watch?v=-79pX1IOqPU&feature=email /]
