Check out this video from Chemical Reaction Tutorials (CRTutorials). If you love filmmaking, prop making, editing and everything else that goes along with making movies, then you'll want to see what Adam has to say about lightsabers.
In the first video, Adam shows you how to make two different kinds of realistic lightsabers from Star Wars. Most fan films use light sabers that look clunky and unreal, so see how you can make the real deals, almost.
The second video you'll see how to create the Jedi light saber effect with Windows Movie Maker, Gimp, and Monkey Jam.
The third video tutorial shows you how to perform all of the Jedi force effects, like mind control and such.