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.
They make all kinds of funny scenes in all kind of places. See for yourselves and leave your comment.
This is one of my favourite out of their available videos on youtube:
[youtube xRKfZ0mGLaY]If you love these kind of things, they have two other improv musicals on their channel, and also many, many other fun scenes they created from NYC to Toronto, even to Russia.
Enjoy!