Listen to this "Mr. Brooks" commentary by Kevin Costner. It was posted to the New York Times Web site.
If you've ever had the chance to hear Costner speak about his role choices and character development -- through TV interviews or whatever -- you've realized he's an actor who deeply respects his craft and thinks all the way through his choices.
And his insights into Dane Cook's character are particularly revealing.
Click here to listen. It takes a while to load, but it's worth it.