Some of them still stand up to rereading...if i ever find the time.
I do love my October reading of Zelazny's Night in the Lonesome October and now Gaiman's Graveyard Book. (think Jungle Book written by Charles Addams)
But McCammon's Wolfs Hour is the best epic Werewolf novel ever.
Kim Newman's Anno Dracula is the best Vampire Pastiche novel ever written..any and every vampire makes an appearance in victorian london...even Varney.
I read a whole lot of Anne Rice including her much overrated porn...but none of them are worth the match to burn them up save Interview with the Vampire..i read it in 76 and was blown away..then i reread it when the country went Anne Rice crazy in the early eighties. I still have my old paperback with the original cover art.
If you are going to reread anything it may as well be Stoker's Dracula..i recommend the 1976 avon paperback...no reason..'cept the edition ages well and feels good in the hand..for a hardcover look for the Modern Library with the Green Faced dust jacket.

The only Stephen King I read twice was Salem's Lot - it is still scary.
of Dean Koontz's I only reread Seize the Night and Fear Nothing...they are more speculative fiction than Horror but they can get pretty scary...i really really wish he would revisit these for another in the series...the books came out in 98 and 99 and he says he's been working on the third in the series ever since.
The only Peter Benchley worth rereading is Jaws...though the Island has a clever premise of undiscovered Pirates..though now that real piracy is in the news and in your face, it kind of pales...a better book of that ilk would be McCammon's Night Boat....Nazi Zombies in a uboat...i'm sorry but it's silly scary you know?
