A nice-sized wiki focusing on the genres of science fiction and fantasy. It includes categories for actors, authors, literature, magazines and movies.

The sprawling multiverse of GURPS sometimes seems to be expanding faster than our own; the GURPSWiki tries to keep track of all with sections dedicated to house rules, characters, conversions, GMing tips, worlds and much more.

Risusiverse is a community web site supporting the eccentric, simple, free and downright fun Risus role-playing game by S. John Ross. Visitors to the site can find adventures, characters, cliches, links, rules, settings, software and just about anything else you can think of to improve your Risus game. The goal of the site is to become the definitive source for Risus, and it's well on its way.