For a critic, the Twilight phenomenon is a little like The Da Vinci Code crossed with James Cameron’s Titanic . An ordinary critique of Stephenie Meyer’s wildly populargothic teen romances of vampire love — the first of which is now a monster hit from director Catherine Hardwicke ( The Nativity Story ) — is a little like shooting fish in a barrel … and just about as pointless. Not only are the critic’s efforts irrelevant to the massive, often obsessive (“Obsessive Twilight Disorder” is the self-diagnosis of many devotees), almost entirely female fan base, the elephant in the...