http://www.lspn.net/forum/ - great game, at times relaxing and at times absolutely infuriating!
www.kevinswatch.ihugny.com/phpBB2/index.php - great place to discuss the Chronicles of Thomas Covenant series
http://ahirashangar.ihugny.com/phpBB2/index.php - discuss books by David Zindell (he writes some amazing sci-fi with a meta-physical bent
D.