Hundreds of people will celebrate the return of Glee with spontaneous-looking-well-rehearsed-dancing in the streets of Seattle this weekend. It’s a Glee flash mob! If you’re not familiar with Glee, it ...

One very popular example of a flash mob is the March 2009 video that featured over 200 participants in Antwerp, Belgium, Central train station who spontaneously broke into choreographed dance steps to ...