The other thing - and writers can say whatever they want - is casting. You need to find a person who can inhabit that role, who can not sugarcoat the bad stuff, and not be too hard on the good stuff, but who can come across as a three-dimensional human being with some depth and some thought about what they're doing. When you find James Gandolfini or Jon Hamm, someone who can inhabit this role but still has a natural humanity to them, no matter what they're doing? It's a gift.

You don't drink and smoke that much, and womanize that much, unless you really want to be punished, I think.

On the set, I visit the set for a lot of the rehearsals, and there's always a writer on set. And then I'm involved in post-production, very intensely involved in editing, and the sound mix and color timing. Really, I have about nine jobs.

You can do a lot with a commercial break - you can change days, you can suggest the passage of time. So sometimes that's a great thing artistically, to know that's going to be there. Obviously you'd always prefer that people see it straight through, and you don't want them to be taken out of it by advertising, but that's the reality of what's paying the bills here.

I do find it sometimes that people project their own feelings on to the characters and I think that there is a certain amount of sexism - I mean the proprietary nature, for men and women.

The weirdest thing with friends, the way you measure it is if you go without communicating for months at a time, you can sit down and within five seconds be right where you were. I know it's a cliché, but quality not quantity, and that bond will not disintegrate. It does need to be tended to but it won't go away. It's amazing, though - I'm here in New York where my best friend from college lives, and we see each other twice a year and we're right where we were and a lot of it's unspoken.

That's the miracle of telling a story in film: You can express something inside someone's mind.