Contributed by Jonathan Stevenson / Getting an authoritative grip on a conceptual artist as elusive and unsusceptible to classification as David Hammons is no mean feat. He has been a willful outsider, defensively attuned to an art world that has, until recently, systematically excluded Blacks and others of color, and remains determined to disrupt and, in some ways, to frustrate the art establishment as he cajoles it into changing. Yet in their deft and moving documentary The Melt Goes on Forever: The Art and Times of David Hammons, which had its American theatrical debut at the Film Forum on May 5, Harold Crooks and Judd Tully essay Hammons’ iconoclastic critique with admirable clarity and due appreciation, plumbing the art, finding the man, and situating him firmly in art history without ever succumbing to hagiography or expository dullness.