I have met Kevin Costner twice, once when I was little after his first film “Silverado” was out, he was asking my grandfather for permission to fish on our property, then the second time when he was filming “Mr. Brooks” in Portland. Had a chance to talk with him, he is actually fairly conservative in beliefs but he reminds me of an old school democrat before the liberals took control of the party. I really enjoy his films even Waterworld and the Postman. I wont say he is an amazing actor, but he is actually a decent person that is slowly coming around politically to the right. Mr. Brooks was great, and was loosely based on a Serial killer in Portland, that just happened to be one of my fathers best friends growing up, but Open Range is by far his best work to date.
Here's a recent article that gave the same impression (it's been excerpted online, unfortunately -- the whole article was pretty good):