I've been enjoying the Fallout 4 art book a lot recently, really great read and lots of cool concept art. Some of my favorites are: The Art of Journey - Journey art, the book is as beautiful as the game Studio Ghibli Layout Designs - One of my favorite art books ever, has tons of layout designs and frames from Ghibli…
Skyrim's artbook was great. They also included some shots of zbrush sculpts, which I loved seeing. Also, the Ghibli film "The Wind Rises" (which was an absolutely beautiful film) has a fantastic artbook.
Let's keep it classic: All the "Art of Star Wars" books (can just come back to them over and over, be it monsters, costumes or vehicles), and the Studio Ghibli artbooks I picked up in Japan. I also love the book "Apple Design" I picked up - it got some great Bauhaus and "Braun" inspired product designs for early Apple…