I learned how to turn it on and turn it off. You learn that in theater, too, but for film work, I learned from doing 'Henry,' I learned how to leave work at work and go home. There's always spillover. Actors speak of this.

I don't approach a role by saying I'll be unsavory or unlikable. I think all the roles I've done have been very passionate people who go to absolute extremes to make their points.

When you think of it I haven't really done a lot of horror. It's amazing: I have done some really good ones, but I haven't done a lot of them.

I got my training here in Chicago at the Goodman School Of Drama, and a lot of my personal work is usually internal work and stuff. Everything else that goes on is icing on the cake - your wardrobe, your makeup, whatever else you have to do.

'Cliffhanger' got me in the best shape of my life, working at 10,000 feet up in the mountains. And everybody was great. I lived in Italy for seven months doing that movie. It was a great vacation.

I was pretty confident that I'd be playing something, if James Gunn could convince Marvel Studios and Disney to cast me. He's involved with the casting too, but if he could convince them to go along with him and agree with getting me on the roster, then yeah, I would have voiced Groot. Not a problem. Groot is an awesome character.

I already survived one apocalypse, I don't need another.