The Boogeyman: Another good and creepy tale. I didn't feel much sympathy for the rather unpleasant protagonist.
The Man who loved Flowers: Short and with an ending that I wasn't expecting, though in hindsight the clues are there.
Jerusalem's Lot: Effectively told through letters and journal entries. I thought King built up a nicely oppressive and eerie atmosphere, and managed to sustain it to the end. Good scene when the creatures are confronted in the cellar.
The Mangler: Very good except for the ending. I squirmed at King's description of the guy getting his arm ripped off.
Apparently this had a basis in reality. When the TV miniseries version of The Shining originally aired, the TV station that aired it where I live sent a reporter to Maine to film "Stephen's Kingdom" segments to air during the 11:00 news on those three nights. One of the places the reporter visited was an industrial laundry where Stephen King worked when he was a college student. The man that was interviewed said that someone lost an arm to the flatwork ironer while King was working there.