Being a superhero has never looked so good on TV as it does on NBC's breakout hit Heroes, which enters Toronto's Top 10 for the first time. Three of the series' stars ? the unkillable cheerleader, the adorable Japanese time-traveller Hiro and the politician who can fly (Dixie Chick Natalie Maines' real-life hubby Adrian Pasdar) ? are the faces looking out from this week's cover of Entertainment Weekly. And no wonder. In a season of freshman series that have barely survived the first months of the season (Kidnapped, Smith, Runaway, we're talking to you), Heroes has buzz and about 15 million U.S. fans buzzing about future plot twists. It's never been so cool to be a superhero geek.