Every couple of years - no, that's every couple of weeks - I think I'm going to give up acting.

I heat myself up over the fact that I am never going to be as good as I want to be.

I do what I can, but I'll always give it a shot. You're not going to see me playing a Welsh character any time soon, not because I wouldn't love to. I went up to Wales once and read for a film with Rhys Ifans, and haven't been asked back since. We did have a nice time on the train on the way back.

It might take me an hour to get to feel at ease with somebody. I don't find it easy to go into a room full of 10 people and give it all away. In the pilot season in Los Angeles I've done that a couple of times.

It's always a good idea to let the audience make up their own minds.

'Heroes', 'Desperate Housewives', 'The Sopranos' - they're all very stylised. 'The Wire' is much more rooted in realism and honesty. In American television, I can't think of anything I'd rather have been in because it has got something to say and that is the kind of thing I want to do.