Here they come, more than 20,000 strong, a good-sized town’s worth of earnest Xenas in leather bustiers, pirates in plumed hats, anime wannabes in Crayola wigs, Hobbits with hairy toes, Klingons speaking in tongues, hyperventilating autograph-seekers and trivia Brainiacs and folks who stay up all night singing weird songs, and . . . holy mother of Harry Potter, is there no end to them? [More]