Absolutely fascinating documentary which is more a cautionary morality tale for Banksy rather than anyone it would seem. Originally billed, more than a little incorrectly as a Banksy film, in reality this is more about Thierry or Mr Brainwash and how he to rose in the art world as an ersatz guerrilla film maker apparently making a film about street art until a fortuitous meeting with Banksy, but then became an "artist" in his own right though is now apparently shunned by those self-same artists who originally helped him.
The amazing thing about it is despite his seminal contribution to the creation of Mr. Brainwash, Banksy still seems to remain one utterly cool mofo.
(disclaimer: huge Banksy fan. Can't gush about him enough.)