I don't like Stephen King's recent books very much, but his early books and short stories are quite good and entertaining. In my opinion Night Shift is the best book of Stephen King.
Night Shift contains many classic horror short stories and the best of them is Jerusalem's Lot, which is a homage to H.P. Lovecraft. Jerusalem's Lot is without a doubt Stephen King's best short story.
I also like Children of the Corn, The Mangler and Sometimes They Come Back.
If you like good and entertaining horror stories, you should read this book.