A fascinating look at the corruption and biased built into the shady organisation responsible for rating movies in America. It almost makes me grateful we have the BBFC over here... but then, to the best of my knowledge, the MPAA have never censored a washing machine from a Disney movie, so on balance it is, to paraphrase Mark Kermode, like choosing between drinking a cup of piss and a cup of shit.

The interviews with filmmakers are the absolute highlight, particularly Matt Stone, Kevin Smith and John Waters, who manage to be both droll and scathing about the indignities to which their films have been subjected. The low point, however fun the private investigator business might be, is writer/director Kirby Dick's obsession with putting names and faces to all the anonymous censors. I fail to see what precisely is gained by knowing that one of them is called Joe Bloggs, that he's 42 and lives at 123 Fake Street.