Jedi Republic threads on galciv.com:
Main thread
Recruitment thread

Galactic Civilizations:
Home page
Encyclopedia
Metaverse
Forum
Library

Player Resources for Galactic Civilizations:
JavaScout's Galactic Civilizations Database
MadMaz's Star Wars mod for GalCiv
Hawaii-Five-O's GalCiv Writer program
Apolyton.net
CDG Design Group

War of the Worlds (of the GalCiv worlds, anyway):
Homepage
Galciv.com commentary thread

Websites for Other GalCiv Empires:
Fellowship of the Ring
G.R.O.S.S.
Midwest Confederation
European Alliance
Apolyton.net
CDG Design Group

Star Wars Sites:
http://www.starwars.com
http://www.theforce.net

And just for fun, be sure to check out the Star Wars collection at:
http://www.atomfilms.com