I want to like this book. I really do. But I can't. I dislike Nutt (implausibly perfect and not-that-amusing twerp that he is) and Glenda (who should be interesting, and yet manages to fall flat in spite of it, possibly by everyone going on about how amazing her cooking is), Vetinari's character seems wildly inconsistent with previous portrayals, and while Pratchett's endings can usually be a little trite, this one is flat out teeth-grinding (I'm referring to the golden lady).
The book seems almost self-conscious, nudging us with references to other books and leaning up against us going "Isn't that FUNNY?" And it isn't. Or at least, it isn't funny enough.
People who take football more seriously than I do may find the book good. I can't say I do.