The commentary track became a lot like the movie and there are some funny, long, awkward pauses that you can tell we're just trying to find stuff to say. None of us had gotten to really talk about the movie until that moment and they were in New York and we were in L.A.

I like to shoot a lot of choices. I like a lot of stuff - and so I push to go faster, to shrink the time between the takes so that the takes are what you're spending all your time on.

You could get in rehearsals, pre-production, anything that would actually contribute to the understanding of how a film gets made. I actually find those things increase people's interest in a movie and like that better than worrying about showing the tricks behind the curtain.

[Dalton] Trumbo himself was a terrible Communist.

[ Dalton Trumbo] always said he fought so many fights, all seemingly different, but all about the concepts of fairness and justice.

I really enjoy the consolation when I'm having to cut loose stuff I love, of saying 'Well, at least it will make it onto DVD.' There's a couple of scenes which I liked very much, but couldn't fit them into the film that are on there.

That's why we had Louis C.K. portray the harder line Communist, to accuse [Dalton] Trumbo of being a hypocrite.