Anakin Skywalker's first name is first mentioned in this film. His name comes from a friend of George Lucas, British film director Ken Annakin.

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.

When they were filming the scenes on Endor, Peter Mayhew was told to stay close to the set so no one would mistake him for Big Foot and attempt to shoot him.

Lando and the Millennium Falcon were originally scripted to perish in the Death Star explosion. While this scene was removed, it is referenced when Han tells Leia he has a funny feeling he isn't going to see the Falcon again. Submitted by Cubs Fan

When Oola the dancing girl (with those two things growing out of the back of her head) is trying to get away from Jabba, she briefly falls out of the top of her costume. It isn't as visible in the letterbox version, but quite visible in the regular version.

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."

Sound designer Ben Burtt makes an uncredited cameo as the Imperial officer in the bunker who shouts "Freeze!" and is subsequently knocked into the generator room by a thrown satchel.

The scene where Vader lifts the Emperor and throws him down the shaft, watch it frame by frame and you can see X-Rays of Darth Vader.

The alien language spoken by Lando's co-pilot on the Falcon contains elements of Kenyan, and one line literally translates as, "A thousand herds of elephants are standing on my foot."

On Endor when Leia is shot by a Stormtrooper she falls over and Han turns around and grabs her left breast. Carrie Fisher smiles slightly before the shot changes.

There was a rumour that the Lucas crew ran out of space ships in the final battle and threw a sneaker in and used it as a space ship. In the final battle, there is a space ship that looks exactly like the sole of the sneaker.

Harrison Ford wanted Han Solo to have a heroic death as he insisted in the first film, but George Lucas didn't agree.

The Ewoks' language is a mixture of Tibetan, Nepalese and Mongol. Submitted by Dr Wilson

Most people today know what an Ewok is, despite the fact that the word is never actually spoken in the film. Submitted by Xofer

This film and the first film (New Hope) were released on the same day, exactly six years apart.

The funeral pyre scene wasn't in the original script.

Notice when Luke is hiding in the shadows from Darth Vader his face is half shadowed, to represent the decision Luke has to make: one side is light, on the other, dark.

Luke Skywalker has an AM/FM-cassette deck mounted in the cockpit of his X-Wing fighter. It can be seen as he's flying away from Tatooine after destroying Jabba's barge, in the shot just before he says "That's right, Artoo, we're going to the Dagobah system."

Watch Jabba's mouth when he speaks, and you'll notice it matches the subtitled English 'translation'. The puppeteer didn't know what 'language' would be used for Jabba, so during the take, he would say and mouth Jabba's lines as they were written in the script: in plain English

George Lucas included the scene in which Yoda confirms Darth Vader is Luke's father because, after a discussion with a children's psychologist, he didn't want younger viewers to dismiss Vader's claim as a lie. Submitted by Cubs Fan