British group, The Get Out Clause for assembling their song Paper by performing in front of city-installed surveillance cameras throughout London and then using England’s FOI laws to retrieve the footage used to create the video version of the song, now on YouTube.
HT: 13th floor.
Open Records 
They cheated loads: half of the stuff wasn’t even filmed on cctv! See here: http://observers.france24.com/en/content/20080516-hoax-cctv-video-get-out-clause-clip