The famous New York City landmark Grand Central Station just turned 100 years old. As a great way to celebrate the centennial, 135 ImprovEverywhere participants staged a surprise light show performance in the west side windows. Commuters and tourists froze as they were bewildered by the flashing lights and colors. Of course, the entire event had the green light from the MTA.
Discuss this video and other viral videos on the VVV forums