I finished (again)
The Dark Tower: Wizard and Glass last week, or possibly early this week (I didn't keep track). This is definitely the book where the foreshadowing gets irritating, and perhaps not coincidentally this is the book that more-or-less spans King's career. In the author's note he says that a particular section of the book was a mere sixteen-hour interval, where in real life it was, I dunno, 26 years or some such gap.
( potential spoilers and what not )