My first thought for this topic was Herman Melville, but I thought better of it.
Change the genre of a book by changing a single word in the title
1. Romeo Ate Juliet
2. The Killer in the Rye - J.D. Salinger
3. Munchies on the Orient Express - Agatha Christie
4. Zen and the Art of Lawn Maintenance - Pirsig
5. Visit the Obscure ... Thomas Hardy (a great travel book about unknown resorts and hidden gems)
6. The Great Gadfly
7. Lord of the Mings - JRR Antiques Roadshow Tolkein
8. War and Pizza
9. Of Rice and Men (lovely cookbook for bachelors)
10. The Old Man and the Cialis
11. The Grapes of Bordeaux - John Steinbeck
12. In Search of Lost Marbles - Proust
13. Typos ... Herman Melville's famous guide to proofreading