I love the folks at Improv Everywhere.
For those who don’t know (cough, Rohrbaugh, cough):
Improv Everywhere causes scenes of chaos and joy in public places. Created in August of 2001 by Charlie Todd, Improv Everywhere has executed over 100 missions involving tens of thousands of undercover agents. The group is based in New York City.
The fact that they did this scene on a NYC subway car just cements my appreciation of their work:
Teh. AWEsome.

