KJM:
I only reread my stories when I'm thinking on a sequel or another chapter in a serial.
But outside spanking world I have a personal favorite, Rex Stout and his fat detective Nero Wolfe and his sidekick, Archie Goodwin. A delight to reread.
I usually reread some of my own stories to clarify details about the events and characters, since I use many characters repeatedly and in different time periods (from the late 1960's to the present). In spite of this, I've made a few continuity mistakes--a character described as wearing a punishment outfit months before he received it at a Christmas party, for example.
In my Rejuve Universe stories, which are pretty much linear in time order, I do reread relevant past stories when necessary to get into the right frame of mind and to jog my memory RE necessary details.
There are a few stories by other spanking writers that I like to reread on occasion, notably by Julnick ("Into the Woods"), KDPierre, Smeple, Seegee, Case Wintermute, Carnations72 and KFR ("Special Relativity" and the "Boss Lady" novella).
As far as nonspanking literature, I do sometimes enjoy rereading parts of GONE WITH THE WIND, LONESOME DOVE, STREETS OF LAREDO and the FOUNDATION trilogy, although I'm normally not much of a rereader... --C.K.