Most of us love the light shows splashed across the sides of buildings for Christmas or Columbus Day or other events. They're adorable! Here's Improv Everywhere taking a timeout from the usual business of, well, confusing everyone around them to put on a light show for Grand Central's 100th birthday.
The 135 performers used 270 LED flashlights, and synced up their dance via a wireless speaker system. For a full look at how the spectacle was organized, check out IE's mission report. [ImprovEverywhere]