James Jean is my favorite (living) artist. This is one of his amazing sketchbooks that you can look through.
FYI: James Jean was born in Taiwan in 1979. Raised in New Jersey, he graduated from New York City's School of Visual Arts in 2001. Along with his award-winning cover art for DC Comics, Jean has produced illustrations for Time Magazine, The New York Times, Rolling Stone, Spin, ESPN, Atlantic Records, Target, Playboy, Nike, and Reebok among many others.