flash mob

Students of the group Philadelphia Student Union, which is a part of a larger organization called the Philadelphia Coalition Advocacy of Public Schools, recently performed a zombie-themed flashmob to Michael Jackson's 'Thriller' in front of the school district's headquarters.

The WDR Symphony Orchestra adds a much-needed touch of class to flash mobs by rapidly convening in a square in Germany and serenading the assembled crowd with a piece of music. Of course, their decision to play the 'Star Wars' theme makes the whole thing border on geeky, but we're okay with that.

Beyoncé's choreographed flash mobs are the hottest ticket in music right now. First, B surprised a group of kids mastering her 'Move Your Body' moves in their school's auditorium and on Thursday, she snuck up on a group of shoppers at a Harlem, New York Target taking a dance lesson from her choreographer. The crowd was dancing to her latest single, 'Countdown,' when Beyoncé emerged (to hysterical