Fact Fifty Three: Revenge of the Sith

Fact One: The original cut of the film ran nearly four hours. The opening battle/Palpatine rescue alone ran over an hour.

Fact Two: The volcanic world of Mustafar was designed to look like George Lucas's vision of hell.

Fact Three: Actors Ewan McGregor and Hayden Christensen trained for two months in fencing and fitness in preparation for their fight sequences.

Fact Four: George Lucas deliberately made the Darth Vader suit top-heavy (for instance adding weight on the helmet) to make Hayden Christensen not appear "too accustomed" to it in the movie.

Fact Five: Ewan McGregor apparently asked if he could also play one of the Emperor's red-robed Imperial Guards. However it's not known whether he did or not.

Fact Six: Samuel L. Jackson requested to have a purple light saber in order for him to accept the part as Mace Windu.

Fact Seven: Hayden Christensen gained 24.2 pounds (11 kilograms) for this film. He did so by eating six meals a day.

Fact Eight: Steven Spielberg, Francis Ford Coppola, Robert De Niro, Elijah Wood, Dean Devlin and Liam Neeson are all known to have visited the set during filming.

Fact Nine: This is the only Star Wars movie that did not receive an Academy Award nomination for Best Visual Effects. The film's only nomination was for its make-up, which it lost to The Chronicles of Narnia: The Lion, the Witch and the Wardrobe (2005)