Improv Troop Stages 'Freeze-In' at Grand Central Station

Improv Everywhere, a New York-based performance group, decided to cause a "scene of chaos and joy" (their manifesto) in a very public place — Grand Central Station.

To execute their prank, the group recruite 200-some city dwellers to freeze at exactly the same moment.

Watch the smooth execution of the stunt, crowd reactions and then head to IE’s site for a behind-the-scenes glimpse of how they pulled it off.

[via Kottke]