If you go to any fight, whether MMA or boxing, there's a whole musical soundscape to these events. There's pre-event pump up/psych-up music, there's fighter introductions, there's between rounds, so my musical needs are really diverse.

I would say, while I think audiences are savvy enough, I think that the effects work in the teaser is quite a bit more than presentable. I think they look good and representative of the film. The harder thing with the teaser, interestingly enough is, how much to show.

Because to me, what is interesting about this movie [Real Steel] is its combination of relationship naturalism with. It's like a single conceit movie. The world and the people are very much the way we know them to be, but this sport has evolved.

I'm not sure that I could give notes to someone that I revere. That's a general challenge of directing, giving notes to someone you revere. The other big contribution to this, which most people I show footage to take note of is Mauro Fiore's cinematography is unbelievable.

One that we can admire aesthetically and participate viscerally in. So the goal here, and we've had some early, small screenings, what seems to be kind of happening is that you come in thinking you're going to see a cool robot boxing movie, you don't expect this emotional underdog, father/son movie. And it's not one that's soft and overly sentimental, but hopefully it's one that's poignant.

As opposed to a movie [Real Steel] where everything feels fantastical, it was really important to me, and I recognise it's not the first movie with robots in it, but that blend of naturalism in performance, writing and design with the futurism of this sport. That was the idea.

To be very honest with you, there were two big factors: One was that we were initially coming out in that week before Thanksgiving where both Twilight 3D and Happy Feet 2 are coming out.