Brad Pitt wants to star in more comedy films.

The 47-year-old actor is best known for roles in drama movies including 'The Curious Case of Benjamin Button' and 'Moneyball', but is keen to shake up his catalogue of work with some "worthy" humorous parts.

He said: "I do like a comedy. There's some great comedy coming out In America. I'm thinking of Zach Galifianakis, Jonah Hill, Danny McBride. But the point is just to keep messing it up.

"I figure I've only got some more of these films I get to do, and I wanna make sure they have some worth to me."

When looking for work now, Brad - who raises six children with partner Angelina Jolie - tends to only collaborate with directors who he believes are great at their job.

He said: "First and foremost, it's a directors' medium. It's all about the storytelling, it's the most important thing to me. I look for directors with a strong point of view, then I feel free - it frees me to go and try anything because I know I'm in proper hands that are not going to abuse me. I can try many things until I find that line, that vein, and start following it."