As seen in HBO's "True Blood", vampires have never been more edgy, gory or sexy. Since its arrival on screen in 2008, Alan Ball's adaptation of "The Southern Vampire Mysteries" by Charlaine Harris has exploited the creative freedoms of the HBO brand and captured a cult audience with its passionate, blood-drenched visuals and stories. From viral webisodes depicting vampires announcing themselves on TV to the steamy title sequence and the show's uninhibited...