favorite Stephen King movie... not book.... are you sure this is the one you liked above all others...? It's like listing the Tommyknockers as your favorite movie....
Most of the movies turn out a little too campy for my liking, but Shawshank and The Shining capture the tone of the books perfectly. The Green Mile is phenomenal as well. I hope they turn 11/22/63 into a movie, but it has to have a solid director with a good cast.
Definitive list, in order: Shawshank Shining Stand By Me Dead Zone Pet Sematary Carrie Apt Pupil Misery Mist Silver Bullet Cujo The rest are ****, and I do not recognize made-for-tv stuff. "It" and "The Stand" deserve better. HBO better. I've neither seen nor read "Hearts in Atlantis", and I'm sure I'm forgetting something.