Dutch documentary The Making of the Empire Strikes Back never saw a commercial release but contains a fascinating and rare glimpse behind the scenes of the beloved film. The language quickly switches to English, which is convenient, but you'll have to bear with the shoddy quality (it's worth it). Part Two is here.
Somehow Carlos has made it to adulthood and not only hasn't seen Star Wars, but avoided all references to The Empire Strikes Back's famous twist. His friends filmed him watching the movie for the first time.
Warning: Contains some strong language.