And of course I've got kids of my own now, and they love me being in the Harry Potter films. I'm now part of a phenomenon. You become incredibly cool to your kids, and you get a young fan base. So you became the cool dad at school. You're suddenly hip.

I got obsessed with classical music, I got obsessed with Chopin, with playing the piano.

That's what sets apart one actor from another, and that you can't teach. You can't give someone that. When you're working, putting a character together, or in a scene, that's where things will happen that you have to have the intuition to notice them, and to register them.

You can play older than yourself. You can play younger than yourself up to a point, and then that just becomes impossible because you carry a weight with you that you can't shift, unless you have very boyish looks.

I didn't do drugs. It wasn't my thing. But the drink was terrible. Today when I look back, it's like I was another person. You could call it a coping mechanism, but that would be an excuse. I just drank too much.

I think filmmaking should be a wonderfully free collaborative process, and it so very rarely is. I often see directors as jailers of my talent.

Reality TV to me is the museum of social decay.