Have you had a flash mob happen in front of you?

Tweet

I had never even heard of these before, until my g/f's mother sent one to me. It is hilarious. With a flash mob, usually music starts playing,usually a familiar song and people come out in a well choreographed dance routine. It can happen in the streets or in a mall. There is also a group called improve everywhere that makes up their own songs. Here is a link to my favorite, if you don't know what I'm talking about. http://www.youtube.com/watch?v=dkYZ6rbPU2M I would love for that to happen, and I would love to be part of one. With all the terrible stuff happening today like the economy and terrorists, this is something that makes you laugh. If you've seen one, what was YOUR reation. or even better yet, have you been part of one?