It features Rincewind, the saddest sack of a failed wizard in all of creation. I was fine with Rincewind in The Last Hero, but there he was part of an ensemble, rather than the star of the show. A little of Rincewind goes a long way. A lot of Rincewind has me reaching for something else. Still, I persevered till the end. The stories do get better as the book goes on, mostly because Twoflower, who is basically a prop in the first story, becomes more interesting as a character later on. That helps a lot. On the other hand, I hated the ending. Was I not already familiar with the series and characters, the book would've been flung across the room.
The other thing that bugged is that a lot of it seems inconsistent with later canon. Death, especially, is very different from the character only a few books later in Mort, and not nearly as interesting.
"My name is immaterial," she said.
"That's a very pretty name," said Rincewind
Despite all that, it was okay. There was still enough funny to keep me amused. I've read that Sky One is producing a live action version of TCoM and The Light Fantastic starring Sir David Jason (who played Albert in Hogfather) and Sean Astin as Rincewind and Twoflower, respectively. Tim Curry's in it, too, and Christopher Lee is voicing Death. That should be fun.