Zombies represent a real nexus of fear for me, something approaching an all-out phobia. Perhaps it has to do with the fact that zombies--unlike, say, other horror-based characters like vampires or werewolves--are brought about by something uncontrollable like a virus. They become a faceless mob, hell-bent on feasting on human flesh, transmitting the virus as it takes over the world. Unlike vampires (whose hunger is based upon something entirely different and inimical), zombies have no intellect. Rather they represent something alien, chaotic, and unstoppable, a walking virus in rags and bones that doesn't realize that it has shed its last vestiges of humanity. One of the most eagerly anticipated new series this fall is AMC's The Walking Dead , a horror drama based on the ongoing comic book series by Robert Kirkman that's executive produced by Frank Darabont and Gale Anne Hurd. The six-episode first season launches on Sunday, bringing a horror series to basic cable fittingly