R

A bloody massacre, fingers shot off, a twelve-year-old prostitute, F-words, the C-word, the N-word, a knife through the hand, clips from porn movies… Taxi Driver has it all.

And, naturally, it has an R rating, having just managed to avoid an X rating when Scorsese made the blood in the last scene look less bright. Really, this is one of the classic, groundbreaking movies for ultra-violence in cinema, along with flicks like The Wild Bunch and A Clockwork Orange.