Oh how we love a good flash mob. Remember the flash mob's quaint beginnings? Neither do we. It was so long ago and the "art form" has long been usurped by marketers. But hey, it's still fun to see a hundred or so people suddenly break into dance. Especially when the song is as catchy as the one that accompanies this Vegas-based Planet Hollywood flash mob.
The song, called "Phamous", and the flash mob performance were created in cooperation with the Planet Hollywood marketing department by Shay Carl and produced by Midi Mafia. None of the employees on duty at the time had any knowledge of the stunt.
So yea, it was planned. But we still like it.