Listen, whatever makes the movie better. That's the attitude you have to have.

Hopefully, great science fiction films help you think about issues that relate to yourself, whether it's: What's my purpose? Why am I here? What is it that makes me who I am? Those are the kind of questions my favorite science fiction films ask.

I've said it would have to be our Empire Strikes Back for me to come back and for me to pull the whole team back together. I think we do have that idea. We do have the idea that feels big and really blows the doors off this franchise. It's hinted at promises of something for two movies now, for thirty years, so it's time to deliver on that.

Sometimes with these things all the pieces fall into place. I mean, we've been talking about this for years and we don't have the script now, but sometimes things fall into place very quickly, and if everything lines up it could happen.

Certainly there's pressure while your making the movie.

For me the Blu-ray version is kind of the definitive version of the movie.

I don't think every movie should be made in 3-D, and it should depend on whether it's one of these films that's more immersive or needs to be taken to another world. I'm interested in other formats.