For those of you that aren't in the know: http://www.dresdenfilesrpg.com/
And There's even a Cracked topic on the series.
A summary of the setting, from the site:
Anybody up for it?For most people, Chicago is Chicago, America is America, and Earth is Earth—but there’s more to the world than that. Beneath the “normal” surface of the world are things and people which most humans don’t know about, don’t want to know about, and will do their best to forget about if they ever come anywhere near them. That dead body with the odd toothmarks? Attacked by stray dogs. The traces of thirty different infectious diseases on this corpse? Statistical anomaly. The Tyrannosaurus Rex skeleton from the museum scattered in a thousand pieces on the college lawn? Student prank. People won’t see things they don’t want to see. Most of the citizens of Chicago would laugh at the idea of magic, even though Harry Dresden has his number and occupation right in the phone book. It’s always possible for everyone, from heroes to bystanders, to turn away and not get involved. It’s often the easiest thing in the world to do. You can choose between good and evil, light and darkness, possibility and necessity, taking action and going home to curl up with a good book. The world is weirder, more wonderful, and more deadly than it seems. Some people know this. There are people who know that magic exists and know who to call when they run into it. There are humans who have been divinely blessed or diabolically cursed. There are faeries—small, big, hugely ancient and terrifying. There are dragons, although these days it’s said they consider bearer bonds as well as gold for their hoards.The Nevernever —the world of fae and ghosts—is just on the other side of a veil from normal life; courts of vampires divide the night among them; the White Council of wizards tries to protect the innocent and stop the misuse of magic. All of this is going on, right under our noses. However, this is also a world where a single person, in the right place, at the right time, can do the right thing and save the people he care about. Here in what we often like to call “the Dresdenverse,” we can choose to be people who see, who make our own paths, who do the right thing, and take the responsibility for doing it. Seen clearly, this world is full of light and darkness, with all the shades of grey between. Join us, if only in play. Because it’s only a book, a game, a roleplaying entertainment of magic and monsters. Isn’t it? You be the judge.