Flash Mob?

Have you heard of a Flash Mob? It seems to be a hip thing to be part of these days. I first read about it when there was one in Portland about a month ago (Feb 23) outside of Powell's.

The Oregonian published an article about the incident, excerpt below:

"The mob -- often strangers -- gather at one location at a designated time, drawn by announcements via the Internet. At a prearranged moment, they simultaneously perform some bizarre action, then just as suddenly disappear into the crowd.
Portland has seen pantsless flash mobs appear on MAX trains. Best Buy has been invaded by crowds of customers dressed exactly like store employees. And Grand Central Station has found itself in suspended animation when a New York flash mob froze in place."

My friend GS just sent me a cool link to the Grand Central Flash Mob - you should really check it out.