In the documentary about its making, director Gerard Damiano admits that Deep Throat isn’t really a good film. As Inside Deep Throat itself demonstrates, though, this modest and amusing little porno item became a cause celebre in a divided America of the 1970s. The controversy brought unprecedented publicity to the film, with a piece in the New York Times being credited with mobilising the chattering classes to seek out a movie with sequences of hard-core sex. For Fenton Bailey (co-director of the documentary), Deep Throat succeeded with a relatively mainstream audience because, ‘although it contained hard-core sex, first and foremost it was a comedy; it was a comedy about sex.’ Here is a rare opportunity to see a little film that created very big waves.