One of the most fascinating and innovative documentaries of the last decade, Clio Barnard’s THE ARBOR deploys a radical formal device—in which actors lip-synch to audio interviews—to tell the story of Andrea Dunbar, the brilliant but troubled British playwright who brought the everyday concerns of working-class Britain to the stage with unvarnished authenticity. It’s presented with the irreverently incisive sex-and-class comedy RITA, SUE AND BOB TOO, adapted by Dunbar from her own stage play and directed by fellow social realist Alan Clarke—a film that was billed as “Thatcher’s Britain with her knickers down.”