Official Movies you may have forgot were based on books , Hollywood has been obsessed with translating great books onto the screen with varying results. And occasionally they take mediocre books and make them into fun and sometimes exceptional films. This is nothing new and it doesn’t mean that Tinsel Town has never had an original idea. It takes a lot of work to turn a beloved classic or a grocery store page-turner into something that can last through the ages. While the list of book-to-film adaptations is long, here are a few that you may not have realized were based on previously written material.