Clive Donner’s 1963 version of Harold Pinter’s debut is a faithful, relatively unaltered record of a trio of stunning stage performances from Alan Bates, Robert Shaw and particularly Donald Pleasence (as the splenetic tramp who takes advantage of the mentally crippled Shaw). Four decades on, you can see Mamet’s starting point in the furious inarticulateness of Pinter’s characters, each trapped in an unobtainable dream.