Paul Blake, Jeremy Bulloch, John Chapman. In an oppressively hot summer in a London suburb, perhaps the biggest movie event in history was being filmed by people in alien costumes who could barely remember the film’s name. 40 years later, Star Wars is a cultural institution, and this documentary investigates the lives of the extras, crew members, and even principle cast, and how the films have changed even those people whose contributions are forgotten. Directed by Jon Spira. 2015/color/102 min/NR/widescreen.