I don't think that anyone has mentioned KING OF THE ROAD (English Title), an early film by Wim Wenders. The main character is a projectionist and travels a route in Germany maintaining many theater's projectors. There would be many good excerpts for what you need. The funniest one was a short "experimental" film that toured the festival cirkuit in the early 80s that mimiced every projector problem: lost loop, out-of-focus, no sound, broken splices and ended up with the film burning in the gate. It was done so well that the auidence rarely realized that it was a joke, they kept shouting at the projectionist. Good Luck Dan Bailey, University of Maryland Baltimore County [log in to unmask]