John Sandford's "Prey" series
Anyone into these books? I've got them all (I'm a little OCD that way - if I find a book in a series I like, I have to own them all).
They're all about Lucas Davenport, detective of the Minneapolis PD...Good at busting criminals, bad at following rules and keeping his women happy. Oh, and he's a millionaire who drives a Porsche and has a cabin in the woods, to boot.
Very good writing, and every single one of the books is strong.
He has another, completely different in writing style, series called the Kidd & LuEllen series - just 3 books, but also interesting, in more of a southern, New Orleans-type mood.