These are some sites we've found useful during the production of The Jedi Who Loved Me, and some you might find interesting.

Star Wars: Lightsabres - this site will tell you everything you ever wanted to know about lightsabres
Heroes For Sale - source of great costumes in the UK
Jedi Council Forums - Fan Films - read messages from other filmmakers in the Star Wars "genre"
Star Wars Fan Film Message Board - another Star Wars message board
FanFilms.Com - how to make Star Wars fan films
Star Wars - the official site - the leading fan site
Sci-Fi 3D - professional high quality meshes
BanthaTracks - the Star Wars search engine
Foiled - where we gained our moviemaking experience
"Quentin Tarantino's Star Wars?: Digital Cinema, Media Convergence, and Participatory Culture" - an interesting article about the phenomenon of Star Wars fan-films

See more Star Wars fan movies at these links:-
Star Wars Fan Film Database
Force Flicks
Mos Eisley Multiplex
JediNet - Fan Film Multiplex
SwFans.Net - Fan Cinema
TFN Fan Films

More "Fan Films", not just Star Wars:- - links to hundreds of fan films
FFX - FanFilmXchange