Here's just one part about Nicole:
MG: Working with Kidman, what was that like for you?
Shainberg: For some reason when she became interested in doing the film, I went to Sydney to have dinner with her and to talk about the movie. It was one of those meetings where 15 minutes into the dinner it was like we'd known each other for 20 years. I can't explain it. It just happens in your life where you just meet somebody that you know you're going to be friends with for a long time. It was a filial relationship. It was like she was my sister. I can't explain that, but, we just really trusted each other and I adore her as an actress. That was just the beginning of working together and it developed positively from there. She is an actor who is incredibly alive between action and cut. She is totally present. She's completely giving to the other person. Her only question of the director truly is what do you want? So if she doesn't give a good performance in a movie, which frankly is rare, you've got nobody to blame but yourself. She wants nothing more than to get at the character as deeply as she can.
You can read the rest of the interview here
The Evening Class Interview With Steven Shainberg