Below are a couple of quotes relating to Nicole, from recent interviews with Aaron Eckhart and Miles Teller:
Q&A: Lost in superstars’ glare, Aaron Eckhart happily excels
Read more: http://www.azcentral.com/thingstodo/movies/articles/2010/12/24/20101224aaron-eckhart-rabbit-hole-goodykoontz.html#ixzz19cajNNWu
Q: When you’re acting with someone, do you ever think, “Man, they’re great in this scene.”?
A: Yeah, absolutely. In “Rabbit Hole,” there were plenty of times where I was acting with Nicole and admiring her at the same time, her choices, the adjustments she made between takes.
Q: Both your performances are very natural.
A: Those are the greatest moments, when you know you’re not an actor anymore. That’s what I live for. I want to work with actors that don’t know they’re going to yell, “Action” or “Cut.” I would much prefer to live the part than act the part.
For Miles Teller, a role that was almost too real
But that vulnerability helped Teller get the part: During his audition, he blushed. Kidman, who produced the film and ultimately made the decision to cast Teller, thought his red cheeks signaled a lack of pretense.
“Nicole said she voted for him because that was just so real,” said John Cameron Mitchell, the film’s director. “The accident he had experienced just gave him this incredible emotional weight.”
There’s also an interesting interview with Sandra Oh at FilmSchoolRejects.com, although there’s no real mention of Nicole.