I think test screening works at its best when the audience knows what it's getting.

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

You have a movie and it proves itself and then certain things happen.

I don't know what Bruce Willis has done in real life. We know actors have certainly had tirades - that's for sure. I never had troubles with him, but the big issue is really less about what Bruce is, as opposed to - this behavior has taken place, and sometimes it came out at something that had credibility, as opposed to, "No, I want to be fat and have a beard." Other people say, "I don't give a damn about the credibility. I paid $20 million. I want to see a movie star."

Different reactions while film test screening doesn't mean even the audience thinks ambiguity is a bad thing. But if you're asking them right away to start checking things off, they don't know what to do. I think at their best, it applies to when the audience knows what it is. Then, when they say, "Oh, well, I thought it was too boring in blah-blah-blah part," then you better pay attention to it. It's like going for the hamburger. Better be the good hamburger I went for.

A lot of people have done things over the years and made fun of people in one way or another. When I was a kid, Vaughn Meader used to do John F. Kennedy. I don't know if that makes John F. Kennedy less credible. He would do the voice, he'd have some silly situations or whatever. I don't know if it made him less presidential because of it.

Some actors are supposed to be very difficult, but I've not found that to be the situation.