With Jasper Johns and Jackson Pollock, generally thought of as one of the "old guys" of Abstract Expressionism and one of the few still surviving members of that art explosion that came out of New York in the 1950's. The coolest thing about him is that no one could ever quite figure out whether he was an artistic genius or just some dumb Texas kid doing monochromatic paintings and slapping newspaper clippings and silkscreens onto canvas. Either way, he's definitely got the eye and he blew the doors wide open for the cut-up appropriation-fest that became Postmodernism.