It was shot at Liverpool station in London , using 400 dancers and 10 hidden cameras. No one, but the station employees and dancers knew what was going on...Kind of makes you wish you were there...
http://www.youtube.com/watch?v=VQ3d3KigPQM&feature=channel <http://www.youtube.com/watch?v=VQ3d3KigPQM&feature=channel>