I enjoyed the titlesake story in TWTTK as well. King added lots of juicy lore to Mid-World.
I just finished A Cure for Cancer by Michael Moorcock. The book is split into four sections, each one being titled after a medical procedure: First Incision, Transfusion etc. Overall, ACFC is a delightfully nihilistic romp through England and American in a world where each nation is at war with the other. The chapter headings--inflammatory beauties such as "Rape Goon Takes a Nap with a Corpse!"--are, well, interesting but don't seem much related to the plot.
The plot sort of meanders in and out; it boils down to a photonegative Jerry Cornelius (pitch-black skin with starkly white hair vs. white skin with black hair as in The Final Programme) racing against a gluttonous Bishop Beesley to procure a machine which increases the entropy levels throughout the universe. Jerry is, at best, an amoral protagonist who is trying to save the world by bringing about its dissolution into Chaos, so that it can be reborn with a greater sense of equilibrium between Law and Chaos. He's got no qualms about turning his vibragun on his allies and lovers once he's done with them.
The Bishop, of course, wishes to destroy the entropy machine to preserve the word, even though its basically gone to pot.
I give it an 8.5/10.