It's always hard when you're playing someone for a lot of people out there who are going to see the movie after reading the books. There's a communion between a reader and the writer, so people will have an idea who Sirius Black is and I might not be everyone's idea of that.

How do you remember all those lines? By forgetting everything else.

As an actor, you people-watch, you observe. And the more famous you become, the sad thing is you lose the ability to do that. Instead of people-watching, you become the focus of attention.

You take what you know, and you put it through your own prism. If I play characters that break down or cry, it's Gary Oldman crying; it's not the character crying.

Being a good director is knowing sometimes when not to say something.

To be honest, Im a little tired of playing bad guys. I long to do a comedy. But it was fun knocking Indiana Jones around.

My passion and energy get mistaken for anger.