Check out some of his novellas like The Langoliers, If It Bleeds, Elevation, etc. They are shorter reads (for King at least, usually only a couple hundred pages) and generally get straight to the point (instead of spending a chapter describing a scene).

That and his short stories are some of his best work. It might make you want to jump into some of his more iconic stuff or allow you to realize you don't love his writing style and save you a couple thousand pages.

The Boogeyman is my favorite short story from him. Jerusalem's Lot is also the short story that Salem's Lot comes from. Another great read.