Iron Man star Robert Downey Jr is going back to school for his latest movie Charlie Bartlett.

He plays a world weary headmaster who has to deal with Charlie, a rich kid, who does not fit in.

He discovers his talents lie in teaching - well at least in dishing out advice to the other messed up teenagers in school.

So he becomes the resident psychiatrist.

Unfortunately his new found fame also brings him to the attention of Kat Dennings, who just so happens to be Robert Downey Jr's daughter in the film.

And dating the headteacher's little girl, is never going to be easy.