Stephen King is easily the one author with the largest number of movie adaptations to his name, though one of his books in particular never got its just dues in terms of a feature film. For the most part, Stephen King's movies tend to fall into the horror genre, as the famous writer primarily works in the world of spooky stories. However, he does occasionally take a break from his routine style, resulting in movies like The Green Mile or The Shawshank Redemption.