Poll edited to allow up to 5 options, along with an "Other" answer, although enough of the major genres are covered to keep the poll.
I like non-fiction, more than fiction, usually. I checked "Other" because I like books like the Uncle John's Bathroom Reader series or things like that which give all kinds of obscure and oftentimes entertaining trivia. A lot of funny things in those kinds of books.
If you like laughing at idiocy, I highly recommend the "Duh!" series. I can't remember the author, but it's basically a set of 3 books that recount hundred of stories of people saying and doing completely idiotic things. It's sort of like the Darwin Awards, except the person being stupid doesn't die every time.