Sandman Slim by Richard Kadrey. I just laughed for three days.
So with me being home because the wife is having some medical issues I have had a little bit of time to do some reading. In the last three days, I've polished off three novels (the only one that are out there) in Richard Kadrey's Sandman Slim series. The three books are called Sandman Slim (duh), Kill the Dead, and Aloha From Hell.
How do I explain this series? First, take Dresden and make him a completely pissed off magical savant who has been cast into Hell for 11 years after his "friends" backstab him and use him a payment for a deal with some super-badass anti-angel's known as the Kissi. While there in Hell, he is forced to fight in the Arena, slowly losing a grip on what it means to be a human and becoming something that is almost like rage and violence personified.
Then he escapes.
After waking up on a burning trash pile in an L.A. cemetery, he sets off to find his old "friends" who sent him "Downtown", as he calls it, and show them just what it is they did to him. Crazy hoodo doctors, a reformed semi-human woman who drinks people like a spider drinks a fly, his 150 year old French alchemist buddy who accidentally made him self immortal and the talking head of one of his old "friends" all join up for probably the largest collection of "fuck you"'s, bullets and stolen cars this side of Grand Theft Auto IV.
Warning: this book is as irreverant as Hell, pun intended.
Amazon.com: Sandman Slim: A Novel (9780061714306): Richard Kadrey: Books