3.0

Definitely not one of Christopher Moore's best, but okay. You could read this without reading the first two books in the series, but it helps. There's also a character from the book Island of the Sequined Love Nun, another one of Moore's meh books, in this. I'm not sure if I'd call it a draw though.
I guess what I'm saying is:
If you don't have anything better to read, you could do a lot worse than read this one.