Looking at my book shelves I have quite a lot of sword and sorcery, several sci fi (I recently got into Philip K Dick), lots of spy novels from Bond to Bourne and a variety of crime fiction. I also like Alexander McCall Smith's and Ian Banks's Scottish stories and humour; Pratchett, Fforde, Idle etc,.
I also have a lot of non-fiction. Some autobiographies - Jackie Chan, Billy Connolly and a dozen or so rock stars. There are lots of reference books and a huge pile on esoteric subjects from space-time to the history of learning!
How are your bookshelves weighted?