Fandoms: Due South, Farscape, Buffy: the Vampire Slayer, Dune, Angel: The Series, Horatio Horblower, Magnificent 7, Vampire: the Masquerade, Earth: Final Conflict, Stargate SG-1, Stargate Atlantis... Many More.
I own a few communities:
multi_fanfic - A multiple fandom, multiple genre, fanfiction community with no limits on pairings or lack there of. We welcome any kind of fic and kinks, but there are legal limits we must follow.
t_31_bang - A mini-Big Bang with a thirty-one day time limit. 5000 words written in 20 days. You submit a prompt, then pick a prompt, write a fic of at least 5000 words for it, then post it on the last day.
worthington_fic - Fanfic based around the characters played by Sam Worthington. Any and all are welcome.
6_of_dylandog - Fanfic based around the six degrees of Dylan Dog: Dead of Night actors. Any fic based upon a character they played in the movie, other fandoms, or even themselves is welcome.