Have you heard about Improv Everywhere? (Hat tip to Terri Blackstock!). Improv Everywhere causes scenes of chaos and joy in public places.
Created in August of 2001 by Charlie Todd, IE has executed over 100
missions involving thousands of undercover agents. The group is based
in New York City.
Here's one in Grand Central Station:
You can find lots more videos on their YouTube channel and their web site.
~robin
