Sunday nights can not come fast enough for me right now. Are you watching it?
It's based on a series of books by Charlaine Harris called the Southern Vampire Mysteries. Right now I'm reading the first book, Dead Until Dark, very good. The show is based on the book but Alan Balls has changed a lot of stuff so it will be interesting to see his interpretation of it. If you need a vampire fix after Twilight I recommend the books. The show is a bit racy, but then again it is HBO. So don't say I didn't warn you. ;) There are only three episodes left and word is that they have started working on series two. If you have DVR On Demand you can catch up on the shows, but if you don't have HBO I highly recommend the books and wait for the show to come out on DVD.
And another reason I love watching this show is that there is some serious eye candy!