When writer/director George A. Romero released his seminal cult classic movie, Night of the Living Dead, in 1968 he had little idea of the vast cultural impact it would have. Over the past 40 years zombie culture has steadily grown in popularity--until the legions of the undead have infected every aspect of pop culture from movies and novels to comic books, television, music, toys, and even fashion. What are they? Where did they come from? What do...