I hope it's not all I'll ever do, but I know I've played enigmatic characters. For me, the good characters are people who get places, are devious, are cunning and tricky and hard to pin down. Obviously, if you play one and you do an okay job of it, that'll be on people's minds.
I suppose there are actors who are worried about their public image. But I've never had any trouble playing unpleasant characters. It is only a part. Which is why you do it -because you are interested in exploring something you never could or would be.
I've made a point of trying not to play the same part and of moving between theatre and film and TV. The idea is that by the time you come back, you have been away for a year, and people have forgotten you. If you like having time off, which I do, that's a good career strategy. Or at least, it's my strategy to keep my head together.
My own rapping skills are quite good, actually. You get this thing, I think it's called Songify or AutoRap, and you talk into them, and they auto-tune it and make it into a quite interesting musical number. And I got one where it builds it into a rap.
So-called reality TV, which dominates British channels, is destroying what made it cherishable to me and lots of others in the first place. I loved Alan Clarke, Ken Loach and Alan Bleasdale's work. In fact the first TV dramas I ever saw were 'Screen Twos' produced by David Thompson, who also produced a lot of Alan Clarke.
The first time I played a killer, in the 1997 film 'Mojo,' I went to my local video shop and got out a video of real executions and a history of the Third Reich. The guy in the shop was giving me a look. I thought this would help, but I don't think it made any difference, and I don't want to see any more executions.
There's a lot of 'Game of Thrones' stuff used in a lot of pastiches. I don't know if I've seen a Lego 'Game of Thrones' yet, but there must be one. And there's an animated thing that's been going on for quite some time, and Littlefinger is a newsreader in it, and it's great.
To start, I wasn't really interested in acting at all, and I didn't make much impact. The first play I was in was on for five nights and I didn't show up for two of them and nobody noticed. But I stayed because that's where my friends were, and after a while I found myself wanting to inhabit other people's worlds and lives.
It's nice to have a few names. I use a few names myself. I use a few different surnames. I call myself James sometimes. I actually use my mother's name as a professional name. But if someone calls me Mr. Murphy or Mr. Gillen, I don't like that. I don't like being called 'mister,' and I don't like being called 'sir.'
I myself started out quite young; when you're working, professionally, even if you are in your teens, you just want to be treated the same as everybody else. You just want people to see you as an actor and not as a kid.
I really like coming-of-age dramas. It's probably the most intense period in anyone's life, those years before you become an adult. Dramatically, there's so much to explore there. And it's nice to be around young talent coming through.
I have Googled myself, yeah, I think everybody has. I try not to make a habit of it - in fact I made a rule once never to Google myself, which made me happy.
I don't really differentiate between different genres: if there's a good part going, I'll go after it, and it's preferable to me if it's something I haven't done before.
I don't like DVD extras. No. Especially when they do things like put out alternative endings? I find all of that a little bizarre, because there should only be one ending. I don't like to be told, 'Oh, we could have had it this way,' for the director's cut.
'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.
Becoming a father has made my life a lot more interesting. It's like everything slows down because time goes slower, and you notice that you're actually awake for so many more hours. Your waking hours elongate because you're doing things at a child's pace.
Because work takes up a lot of time, you have to choose your moments for really letting rip. I hang out with my friends and my family and I spend time with my kids when I'm not working. They don't see my being an actor as exotic. For them, it's just an everyday thing. Sometimes it's amusing to them and other times, embarrassing.