20. Document of the Dead (1985)Behind-the-scenes footage from Dawn of the Dead is the highlight of this aficionados-only affair, which follows the 1979 satirical zombie horror all the way through to distribution. Director George A Romero, makeup maestro Tom Savini and the occasional zombie actor shoot the breeze in the deserted shopping mall that provides the movie with its incongruous central location.19. The Death of “Superman Lives”: What Happened? (2015)Imagining what might have been if Tim Burton’s Superman Lives had got off the ground, documentary maker Jon Schnepp cosies up on screen with his interviewees and insinuates himself unforgivably into...