Like the character I played in 'Jekyll', we all have different masks we put on for different occasions. As much as we all want to lead decent lives, we're also attracted by the idea that something dark may lurk within us.

I actually started out on the stage as a singer.

We have to get behind the scientists and push for a dementia breakthrough. It could be that we fear dementia out of a sense of hopelessness, but there is hope, and it rests in the hands of our scientists.

All my adult life, there was the Troubles. That was the backdrop of my life.

I spend an awful lot of time by myself and enjoy that.

I love nothing more than going to eat by myself with a newspaper.

Brain surgery is a fairly aggressive process. There's a lot to get through. There's the beautiful, delicate shaving first, which is really lovely. There's a wonderful ceremony of putting all the covers on, so only the little bit you're operating on is revealed. But once they make the incision and tear the skin back, the drill comes out.

I didn't much like Las Vegas. The noise of the place and the whole 24-hour, 'let's play the slot machines all night' culture of the place just left me cold.

My mother certainly doesn't think I'm charming!

I have three older sisters who, when we were children, used to hold me down on a bad day and put make-up all over me, so I've had an aversion to it all my life and hate sitting down in the make-up chair.

I'm not an actor who is often asked to be in period things.

Drama asks some uncomfortable questions at times... It goes to pretty dark places.

If you are going to tell a story about a child going missing, it's going to have similarities with a real life child going missing.

Unification is less important than the fact Ireland is now conflict-free.

As fabulous as technology is, it can also make us very anxious.

Kids at a certain age don't necessarily want to be dragged to the other side of the world.

My agent Sue realised after 'Cold Feet' that I could have spent the rest of my life doing similar roles. So she was instrumental in moving me away from that.

Funnily enough, Northern Ireland is a great example of where politics can win over conflict. The decision to down arms and follow a political path would have been unthinkable once. It shows just what is possible.

People don't watch TV only to relate to stuff. They also watch to find out about a world they can't relate to.

My wife is a very strong woman.

When I did the film 'Hear My Voice' a few years ago, I disappeared fully up my own backside for a while. Because I thought my career was taking off, I became a bit of an egomaniac and a pain in the neck. I thought I was God's gift to mankind and the greatest Irishman since George Best.

Some actors can distance themselves from the parts they play, but I fall into the category who use bits of themselves.

I thought I was God's gift to mankind and the greatest Irishman since George Best.

My wife would say I'm more Hyde than Jekyll!

When I was growing up, Belfast City Hall was surrounded by security, and we had no access to it. But now, people come in and out of it all the time. On a nice day, office workers and students sit on the lawn outside and have lunch. It's great to see how Northern Ireland has changed. To be part of that is fantastic.

You don't learn charm. It's not something that you can acquire. I have used it much in my life with great success, but it's not necessarily what makes me an actor. It became a very easy label to attach to me. It also feels a bit dismissive. People go, 'You're so lovely and charming', but it's a wee bit, 'That's all you are.'

Ours was a very progressive Protestant family, but my parents were God-loving rather than God-fearing. We went to church, and I still go with my mum and dad when I return home - it's a family thing. I played flute in my dad's marching band, but I had an integrated upbringing. We had a lot of Catholic friends.

I was one of the many kids in Northern Ireland who grew up in the countryside and had an idyllic childhood well away from the Troubles.

Supporting drama for young people is close to my heart.

No one wanted to own Bloody Sunday.

I'd be a very easy therapist's subject.

'Spoilt' is a euphemism for 'loved.'

I'm not very good at standard English.

It's ridiculous, but it's horrible going bald. Anyone who says it isn't is lying.

I think a lot of us who grew up in Northern Ireland weren't politicised enough, frankly.

If I get to the end of my life, and people say, 'He was in 'Cold Feet,' well, I was, and it was great. I thought the fourth series wasn't great. I thought there were weak episodes throughout. Overall, I thought it was a good show, it had an impact, it dealt with a lot of issues, and it was a great part.

There's no such thing as unwanted attention for an actor.

I lived a dual life, and when my dual life exploded, I began to feel much happier.

Acting was a godsend. I found myself because I loved acting.

I spend my money on holidays and eating out, and it allows me to be generous.

I loved my time growing up in Northern Ireland doing youth drama, that is where it all began for me.

It's a complicated relationship with the place one grows up in, particularly if it's Northern Ireland.

There's some irony in playing a journalist after some of the stuff that has been written about me, but it's a great profession, particularly investigative journalism.

Who am I to pass judgment? Judgment has been passed on me, but I adhere to, 'Let him who is without sin cast the first stone.'

I've heard some duff Irish accents. The worst must be Mickey Rourke.

While I've never 'phoned in' a performance, I think I have given some performances where I could have been a bit braver.

I get an awful lot of people coming up and saying they went to school with me. There must have been 80,000 pupils at that school!

Love your parents, but don't have them as your mates.

You can get a bit world-weary in this job, and 'The Passion' reminded me of what a fantastic job acting is and how lucky I am to be doing it.