The rest of the movies based on his books are horrible in comparison.
Sorry, but I have to disagree with this quote. I'm a big King fan as well, but I feel that many movie versions have done the novel/novellas justice and in a couple of cases are better than the source material:
- Stanley Kubrick's 'The Shining' is a far more interesting and engaging story than the novel in my opinion.
- Brian De Palma's 'Carrie' is superior than Kings novel in most ways.
- Tobe Hoopers made-for-TV version of 'Salems Lot' was actually a pretty effective horror film and was fairly well done in my opinion.
- David Cronenberg's 'The Dead Zone' is one of Cronenberg's best films.
- Rob Reiner's 'Stand By Me', and 'Misery' were as good as the source material and at times better in my opinion.
- John Carpenters 'Christine' took out the Roland LeBay haunting his own car angle and made the car an evil entity from birth instead which I kinda liked more.
- Frank Darabont's 'The Shawshank Redemption', 'The Green Mile', and 'The Mist' were very respectful to the source material and were done very well in my opinion. Shawshank is ranked number one on IMDB's top 250 films of all-time list.
Movies that were also pretty good/decent that were based on King novels/novellas were 'Cujo', 'Firestarter', 'Children of the Corn', 'The Running Man', 'Apt Pupil', 'Silver Bullet', 'Dolores Claiborne', '1408', 'Salems Lot' (television mini-series).
Of course, there have also been bad adaptions- 'Graveyard Shift', 'Needful Things', Pet Semetary', 'The Stand', 'The Tommyknockers', 'The Langoliers', 'IT', 'Dreamcatcher', 'Thinner', 'The Dark Half', 'Secret WIndow', 'The Mangler', 'Hearts in Atlantis', 'Bag of Bones', all other 'Carrie' films.
All-in-all however, I feel that King's novels have been fairly well represented on film. He definitely has to be the most adapted author of all time.