The Art of Tangled - This has become one of my favorites amongst my Disney/Pixar art books. It has a wonderful collection of rough sketches and background paintings.
Cover Run - There's something about Adam Hughes' style that I love. It's a great blend of realism and comic art I think.
The Art of Uncharted 2 - I love video game art and this has some of the best enviromental paintings I've seen for a game. It's rich and full of details and worth every penny