14. Last Tango in Paris (1972)

Bernardo Bertolucci apparently based this 1972 sex fest on his deepest sexual fantasies. It was left to Marlon Brando and Maria Schneider to enact them on the silver screen as the misfit couple carrying on an anonymous affair in a Parisian appartment. The controversial scene is infamous - Brando initiates anal sex with Schneider via some butter and hardly pulls his trousers down to do the act. It must have been one of the silver screen's first depictions of outright buggery. Bertolucci was nearly sent to jail in his native Italy for the on screen shenanigans of the stars of his film.