Well... I've read nearly every one of King's book two or three times... I've seen all the movies that have been made into movies, television series and little odd tv short-things.
The first movie I saw which maintained the integrity of King's story was 'Misery.' It took Rob Reiner directing to get it right.
'The Shining' in it's original incarnation was a classic, but misses the heart of the book.
'Shawshank' was a compelling, stirring film, but really didn't hold to the story. Great film, but I wouldn't really call it a King movie.)
'It' was horrible. Just plain horrible.
'Stand By Me' was a great one too... but I think the original story surpasses it by a mile.
'The Green Mile' was very well done, but visually, it wasn't as good as the way I envisioned the tale in my head. Chalk it up to the notion that some stories are better left up to the individual's own imagination.
'Cujo'... yuck
'Christine' and 'Carrie'... ehhh... just bearable... nothing more.
'Firestarter'... please... no thanks.
''Salem's Lot' wasn't even scary.
Don't even get me started on 'The Lawnmower Man' 'The Tommyknockers' and 'Maximum Overdrive'... there should be laws against such garbage.
'Needful Things' was a waste of film.
'The Stand' was okay... paled in comparison to the read. Molly Ringwald was casting mistake.
I can take or leave 'Pet Cemetary'
'The Running Man' was silly... such a good tale gone awry.
'Quitters Inc.' was pretty good (gotta watch lots of wee-hours television to see this one) and is, in my opinion, one of King's greater short stories.
What did I forget?
I'm a fan of King... always have been.. always will be. Personally, I feel his short stories are far superior to his novels. In the shorts, he doesn't have the time to screw around... bing bang boom... story done and over. No silly turns at the end.