I start from scratch with each movie; I wipe the slate and I certainly don't rely on some bag of acting tricks I've amassed over the years.
I think mostly it's the adventure that I will have in making the movie. That's what I look for.
A movie star is someone people look at and go, 'I want to be like that person'. There's the responsibility of desire. It's not something I'm interested in trying. I would fail miserably at it, so why even bother?
How serious can a movie about time-traveling robots be? You want it to be cool and fun.
The interesting thing about a movie is the movie.