More and more, the titles showing up in movie previews are familiar -- you've seen them on your bookshelf. It's true for both adult books (think The Time Traveler's Wife and The Notebook) and teen reads, but arguably the move from the Young Adult novel to big screen has been met with far more enthusiasm and monetary success.

Movies based on YA books are, of course, nothing new. We've all sat through film adaptations of our assigned reading in English class (or, alternately, skipped the reading and just watched the movie). But these days, if a YA novel does tremendously well, it's only a matter of months before rumors of the movie start circulating. So now, the term 'blockbuster' has migrated from the movie theater into the arena of literature.

When did this trend begin? Arguably, one can point to the Harry Potter franchise. Midnight openings were unheard of before J.K. Rowling came along; after Harry Potter and the Goblet of Fire, they came to be expected -- for both popular books and their movie adaptations. The first movie, Harry Potter and the Sorcerer's Sto