I just spent half an hour on Better Book Titles and have to say, NEW OBSESSION. Below are some of the ones that popped out at me. Granted, I found so many more that I found offensively hilarious.
I encourage you to check it out; there's a new post every weekday and--unless credited--all redesign and titles are done by Dan Wilbur. Each Friday features a reader submission, so if you're a graphics whiz/bibliophile/humorist, I suggest you go for it.