I just finished reading Black House, by King and Peter Straub. It'a a sort of Sequel to The Talisman, with a strong tie-in to the Dark Tower series. I don't remember if the tie-in was in The Talisman as well. Anyone? I really enjoy writers who create a universe and set all their stories in it, with fun little connections between books, or even melding of series, as Azimov did.