First, try this quiz which has one word missing in the title: http://mentalfloss.com/article/67035/name-missing-word-each-book-title. How many of the books can you correctly identify?
Then, take a look at two Twitter sites. Check out #RuinaBookinOneLetter and #RuinaBookTitleinOneLetter to see how book titles can be changed with hilarious results by changing only one letter. The suggestions with photos are the best.