The Bourne Supremacy star Matt Damon wants to make a “character-driven porn movie” with an intellectual plot.

Damon, 33, believes X-rated films and action movies are predictable and badly written and is keen to break the trend by creating a adult movie where the narrative is as important as the graphic sex scenes.

Damon says, “My theory on action movies is that they’re like porn movies. A porn movie has got really bad writing, really bad acting and really thinly drawn characters.

“They have a … scene where they talk and say, ‘Hey, I’m the milkman’ And you know what is going to happen.

“And then you get the action and you don’t really feel anything for the action and then you get another really stupid scene with, ‘Hey, I’m the milkman’.

“What I want to do is make a character-driven porn movie. It’s all going to be about the character and the porn’s going to grow out of the characters and serve as character development.

“You know how movie titles get porn titles – movies that rip them off? A producer suggested that we do The Porn Identity.”