Instruct: Classify a given review as either positive or negative.
Query: Wizards! More Wizards!

Even if you take out the entire A plot, which is Rincewind on XXXX, you are still left with a magnificently funny B plot concerning the head faculty of Unseen University and some travels through a spatial distortion in a faculty member's bathroom. The Archchancellor & co. are always very funny, but Pratchett gives them their head in this best-of-all-Discworld-novels (IMHO and that's "up to this one" because I haven't read any that came after this). The Senior Wrangler finds himself humbled (and more) by the accidental presence of Mrs. Whitlow, the housekeeper. The Bursar is having the time of his life out here, and seems to be a lot more sensible than in recent books. And Ponder Stibbons spends all his time (as usual) trying to make the rest of them see sense.It got a bit confusing at the end, when the two plot lines came together, but then, I don't read Discworld books for plot, only for characterization and escapism. I really loved this book.