The film had its unofficial UK premiere in an abandoned rail tunnel underneath London's Waterloo station, an area devoted to graffiti and street art. Tickets for this sold out in a minute. A red carpet was spraypainted on the ground especially for the occasion, while spectators were all presented with tins of spray paint as they left the screening.
The film's editors had to sit through over 10,000 hours of Mr. Brainwash's tapes just to get a few minutes' worth of usable footage.
Banksy claimed that he spent a year watching footage of vandals and graffiti artists spray painting walls.
Banksy's former spokesman Steve Lazarides on whether or not the film is a spoof: "I think the joke is on... I don't know who the joke is on, really. I don't even know if there is a joke".
The New York Times movie reviewer Jeannette Catsoulis coined a new term for this kind of film: prankumentary.