James Rosenquist, the American artist, was one of the protagonists for the pop-art movement (after the 1950s). If you like Richard Hamilton, Andy Warhol, Eduardo Paolozzi, Roy Lichenstein, Tom Wesselmann, Wayne Thiebaud, Claes Oldenburg, David Hockney, Alex Katz, and/or Jim Dine for some examples, you'd love this guy as well. He's 76 years old right now and still going strong.
The piece is called For The Young Artist 1991. This was my photo of it, now at the MOMA.