Trivia: When filming ROTJ, Lucas didn't want anyone to find out that they were shooting the third Star Wars movie, because pandemonium could break out. So when someone asked the crew what they were filming, they said "Blue Harvest". All of the crew had shirts and hats that said Blue Harvest on them. The fictitious film's tagline was "Horror beyond imagination."
Trivia: In the new box set of the three original films, they have changed the ending in RotJ to correspond better with the ending in Revenge of the Sith. When Luke sees his father as the Anakin Skywalker spirit, in the final scene at the celebration, it is young Hayden Christensen as Anakin's spirit instead of older Sebastian Shaw, who is the spirit in the original version.