John Baldessari has been termed "one of the most influential artists to emerge since the mid-1960s." From his phototext canvases to his composite photo collages and installations, Baldessari's works have contributed to the definition of postmodern art. In the early 1970s, he produced droll conceptual video works that are ironic investigations into perception, meaning and interpretation, rendered with deadpan, often absurdist humor. full biography