Several fantasy books have been adapted into successful movies or TV shows, bringing the enchanting stories to life on screen. Examples include J.K. Rowling's 'Harry Potter' series, George R.R. Martin's 'A Song of Ice and Fire' series (adapted as 'Game of Thrones'), and Philip Pullman's 'His Dark Materials' series. These adaptations have garnered a massive fan base and further popularized the fantasy genre.