Astro Gate Forums - Message board with topic threads including Andromeda, The X-Files, and Stargate: SG-1, as well as discussion of science and science fiction in general. - http://www.stargater.co.uk/forum/
Othala - Multi-fandom forum with threads for Stargate SG1, Stargate Atlantis, Red Dwarf, and Manifest Destiny. - http://noslen090.proboards25.com
Yahoo! Groups: Sci Fi Junkies - Message board for fans of Stargate SG-1, Enterprise and The Dead Zone to discuss how much they enjoy watching the shows. Includes photos and polls. [Yahoo! registration required.] - http://groups.yahoo.com/group/sci_fi_junkies/
Flare Science Fiction Forums - An old, large Star Trek-turned-Sci-Fi community seeking new members. Formerly known as the Starfleet Communications Relay and the Behaviour Group Forums. - http://flare.solareclipse.net/cgi2/ultimatebb.cgi?
Fantastic Television - Message board and chat room for fans of science fiction and fantasy shows. - http://groups.yahoo.com/group/fantastictelevision/
Tigerclaw's Crossfire - Fans debate burning issues such as whether Imperial Star Destroyers from Star Wars could defeat Star Trek's Galaxy-class starships in combat. Includes polls and a variety of message boards. - http://www.tecr.com/tigerclaw/
Coffeerooms(sm): Jolau's Sci Fi Board - A gathering place for friends and fans of science fiction television. - http://www.w3pg.com/forums/tv/scifi/index.html
ASciFi.com: The Science Fiction Forums - Message boards for a variety of series, including Farscape, Stargate, and X-Files. - http://www.ascifi.com/forums/index.php