But this is where you get all the market research and things get in danger of becoming formulaic, and where you depend on brands and getting recognised actors. It's the thing that precludes risk very often, otherwise everyone would be avant-garde all over the place.

I don't think it's aiming at gags, I think the humour is woven into it. It's part of how the characters operate and how they deal with disaster because they're worldly enough to have a bit of irony and wryness about their own circumstances. So, I think the humour comes out of that.

I think everyone is throwing happy stuff at you, and that's when you come over all humbug. It's happy stuff in your face, happy stuff is being sold to you.

It was mainly to do with Helen Hunt, to be honest. That's what drew my attention to it. I was interested in the fact that she was going to be directing. I'd never met her but she projects a degree of intelligence and it was convincing t me that she'd be able to handle this sort of material very well.

The skill of a good actor is to make it always seem like you're in that fantastically spontaneous moment. Very often, a stand-up comedian has a different instinct, which is to reinvent. Once you've laid down some material, and made them laugh, you move on and find some new material.

Doing a job, or even watching a film, can make a difference to your life, but I don't think it ever has an explosive impact where your life will never be the same again. It kind of seeps into your life, and perhaps realise you're a little more vigilant about certain things than you might have been.

Nothing brings you closer together than blind terror.