Creative differences are legendary in this movie business, so we're really not exploring the creative-difference aspect as opposed to the money aspect, or the fact that something can come up in a movie and literally put the whole movie on the line, and this is where producers have to earn their keep.

If you test Iron Man and that audience doesn't respond well, you can be damn sure that there is something wrong with the movie that you have to address. Because they're expecting a certain amount of action, right? They want a hero. There are certain things that have to be compatible with the way the audience is thinking about it. If you take some other film, like No Country for Old Men, you can end up with all kinds of crazy reactions.

I'm fascinated by documentaries, to begin with. Because of the nature of television, as opposed to theatrical, documentaries can be in this long form and take you on a journey.

There was a time when I said, "I'm going to go do a television thing," after doing all these theatrical films, and heard, "Television? Why are you going to go back to television?" It's an interesting place.

A lot of time mistakes are very interesting - you look for the behaviour that's not the one you expect.

I don't know that you can do it as a satire. I mean, the business is crazy enough as it is. It's like doing Wag The Dog - we took a thing that was almost completely absurd on one level, and then ultimately those things came about.

Creative differences are legendary in this movie business, so we're really not exploring the creative-difference aspect as opposed to the money aspect, or the fact that something can come up in a movie and literally put the whole movie on the line, and this is where producers have to earn their keep.