Send My Conscience Home in a Taxi

Came across a group called Improv Everywhere a few years back, can't remember the context - although it's possible their Starbucks "Action" may have been involved.

Anyway, they put on one of the coolest performaces ever: The MP3 Experiment, since repeated a couple of times. I was reminded of it because of an item in yesterday's age about Silent Parties, which actually sound like a halfway interesting idea...