I hated the film adaptation of "The Dead Zone", despite the fact that martin Sheen was so wonderfully evil as Stillson. It was not faithful to the book and the changes seemed ridiculously arbitrary. "Christine" was pretty darned good, but the best adaptation of one of King's horror novels, IMO, is "Carrie". While some of "The Stand" is great, the casting of whiny Molly Ringwald as Fran was akin to Sofia in GF3. Just ruined it for me.

And then, of course, there is the excellent "Green Mile" and, in a class by itself, "Shawshank".