A community of [Community](http://en.wikipedia.org/wiki/Community_(TV_series\)) fans, and the subreddit that's streets ahead! Voted [5th best new Reddit community of 2010](/r/community/comments/f4ln0/congrats_rcommunity_were_the_5th_best_reddit/) and [2nd best little Reddit community of 2011](/r/community/comments/qocuk/not_sure_if_anyone_else_noticed_this_but_we_came/)!
Science Fiction, or Speculative Fiction if you prefer. Fantasy too. Asimov, Bradbury, Clarke, Dick, Heinlein and other SF books. SF movies and TV shows. Fantasy stuff like Tolkien and Game of Thrones. Laser guns, space ships, and time travel. etc. Star Trek, Battlestar, Star Wars, etc.