I love playing real people. It's a huge challenge and responsibility which I take on board and which I relish. It also scares me to death. Give me a totally fictional character and I don't have the same sort of responsibility. If, though, I play Sigmund Freud or Robert Maxwell or whoever then there is a responsibility.

My fun as an actor and my task as an actor is to transform myself to become other people. I enjoy becoming characters but I don't enjoy becoming caricatures. The research I do is only necessary in so far as we move into other dimensions.

I think its very dangerous, the idea of celebrity - you have to be constantly controversial to maintain the status of celebrity. Reality TV is the death of entertainment - its just mindless TV but popular because of its voyeuristic nature, and people are very voyeuristic.

In so many roles I've played the outsider. As an outsider, you have more energy to succeed simply because you are an outsider. There are scripts floating around but they're not coming my way and I think that I am getting a little bit too old to play Napoleon. But if I was ever offered the role I would grab it.

Inevitably, every part an actor plays contains some of himself.

It's an honour to have such a wonderful international cast on board for this world famous murder mystery. Writer Stewart Harcourt has created an exquisite script. His attention to detail is impeccable.

In The Godfather, for instance, they say they won't deal drugs because they have a code of behaviour. He is the last remnants of that. So playing someone like that, who is also in pain with his kidney stone, means you're beginning to find a dimension of the guy who is king and all show and the private guy who is in pain.