Oprah's Flash Mob

I can't believe the shear size of the flashmob at the black eyed peas concert. I don't think there has ever been a bigger flash mob. I have to image it took a ton of practice to get all those people to do the right thing at the right time. I thought it was really funny how excited Oprah was about the flash mob taking a video on her super old phone! Im sad because I feel like flash mobs aren't as cool anymore because people just expect them now.