Just watched Winter's Bone, which had a small release. It was relatively faithful to the novel but with some changes: one of the younger brothers became a younger sister; there was far less of the friendship between Ree and her friend, a few more, but the mood/feeling was well captured, the casting was terrific, the acting was really very good, good music (but very specific to the region so my guess is that most would not like it).
I had asked for it for Christmas as it never played anywhere near me and I didn't think I would find it in the video store. The film won the Grand Jury Prize at the 2010 Sundance festival. Jennifer Lawrence, who plays Ree Dolly in the film received a great deal of recognition for her performance, justifiably, imo.