Nathan Fowkes is a visual development artist who works at Dreamworks. He uses digital paint (aka Photoshop) as well as traditional media for his art. He also teaches art lessons in Los Angeles.
On his blog he shares concept art, colour studies, portraits and his paintings. Some of the work comes from Prince of Egypt, Spirit, Stallion of the Cimarron, The Road to El Dorado etc. Every piece is amazing.
His blog is called Nathan Fowkes Art.