flash mobIt's all fun and games until a flash mob attacks two men in Philadelphia and the mayor orders a curfew for kids under 18. Mayor Michael Nutter wants to curb the number of dangerous flash mobs that have been happening across his city -- recently a flash mob of 40 minors punched, beat, and robbed bystanders. In 2009 a similar group assaulted an innocent cyclist.

Flash mobs started a few years ago as clean, harmless fun, but their recent turn to the dark side is not winning over any fans. But I don't think they're down for the count: Flash mobs are too pure and too awesome to be taken out by a few ne'er-do-wells.

So! Let's look at the five best ever flash-mobs and sit back, relax, and enjoy the creativity and craziness that is hundreds of people doing the same thing at the same time.

In Antwerp, Belgium a flash-mob re-created the "Do Re Mi" song and dance from The Sound of Music. That will bring us back to Do!

One hundred dancers on Bondi Beach in Australia rocked out to a Girl Talk-type mix of classic dance tracks.

My favorite of all time is the flash mob in Grand Central Station in New York that had 207 people freeze at the exact same moment. Brilliant, and definitely eerie.

This flash mob broke out into the Hallelujah Chorus in a mall food court, and I'll be darned if it doesn't get you in the Christmas spirit no matter what month it is.

Over 300 mobbers in Stockholm paid tribute to Michael Jackson when they gathered twice, once at day and once at night, to surprise and delight bystanders.

What's your favorite flash mob?


Photo via YouTube