Goodreads has a trivia game composed of numerous, and let me reiterate NUMEROUS, questions submitted by readers. It is freakishly addictive even as you curse the authors of some of the questions (really do we need that many questions about Anne of Green Gables). I've answered over 1,000 questions and I'm still only about 15% through it all.
Stop by and check it out: Never Ending Book Quiz