guilty pleasure of sorts, but i've loved the majority of his early work since middle school. favorites include:
the bachman books (the long walk and the running man especially)
the stand
christine
pet sematary
it
the dead zone
carrie
his short stories are usually excellent... especially the night shift collection and skeleton crew.
as popular opinion states, he has a bad habit of dropping the ball at the end of a few books, but definitely some great stuff along the way. i kind of fell off the wagon in the late 90s (quality dropped a bit), though cell was pretty enjoyable.