Improv Everywhere

My new favorite thing/idea/concept that I find to be absolutely amazing/hilarious/ingenious.

It's called Improv Everywhere and it's a group that "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."

My favorite one (amongst the most recent) is Where's Rob?

I find the whole idea so amazing in it's non-disturbance. Does that make sense? What I'm trying to say is that all of these "pranks" are in good-natured fun and aren't meant to upset or disturb anyone, which is why they are so great. They're well thought-out events for people who need a good story to tell at the dinner table, perhaps accompanied by some visual evidence (there seem to be lots of people with camera phones and other image-capturing trinkets for visual keep-saking in the videos).