Taste of Cinema's list description: Stephen King is a towering figure in modern day storytelling. Ever since his debut back in the 70s with "Carrie," he was a voice to always pay attention to. With each successive year and a new story, he cemented his place in the pantheon of all-time great writers.
There may be some naysayers, because anyone whose work hits the pleasure centers of the mainstream is always gonna be looked down upon by the high and mighty literary types, but there's very few with as strong a command of the written word as him, even in his worst/most drugged out works.
And almost immediately after "Carrie" was published, an adaptation was put in the works and a classic of 70's cinema was born by the helping hand of Brian De Palma. Then more movies kept being made of his work, and they kept working.