Jamie Foxx does a good rendition of me. It's a real gift, mimicry of that kind, the tonal thing. It's sort of like having a talent for playing an instrument.

I like, for instance, 'Serpico.' I enjoyed playing Serpico because Frank Serpico was there. He existed. He was a real life person and I could - I could embody him. I could, you know, I could work and get to know him and have him help me with the text, the script and become him. It's almost like a painter having a model to become.

He sees the gift, ... He sees the real thing, and he's very turned on by that. An old friend of mine used to say, 'If I dig it, it's mine.' And I think with Walter he digs him, he digs what he can do, and therefore it turns him on and he knows he can help him.

That's where humour lives for me. In the body. The Steve Martin kind of stuff or Jim Carrey, that's what I like. I've always felt that's what I would like to do.

My weaknesses... I wish I could come up with something. I'd probably have the same pause if you asked me what my strengths are. Maybe they're the same thing.

Francis Ford Coppola did this early on. You tape a movie, like a radio show, and you have the narrator read all the stage directions. And then you go back like a few days later and then you listen to the movie. And it sort of plays in your mind like a film, like a first rough cut of a movie.