'Melancholia' prompts Oscar buzz

Lars von Trier's new film 'Melancholia' has premiered in London and is already causing an Oscar buzz.

The drama is about two sisters and how they deal with the knowledge that a planet is about to crash into Earth.

The cast includes John Hurt and Kirsten Dunst, who said she would "immediately have done anything with Lars", such is her respect for the director.

"It's such a rare opportunity that you get to play the lead and play someone who's not your conventional female role in a film," she said.