LOVE that book!
http://www.amazon.com/gp/product/00..._m=ATVPDKIKX0DER&pf_rd_r=02TBFE0YCQ5C2JHGFXDP
A Dirty Job by Christopher Moore, I picked this up looking for a CP book that I have not read at a used book store. It is quite entertaining. I had never heard of that author before.
He's awesome, I've read everything the guy has written. Lamb is IMO the best, though it's tough to pick a best.