STUDIOS love magazine stories that breathlessly hype their summer popcorn movies, so you would think that Warner Bros. might have been happy with Alonso Duralde's cover story about "Superman Returns," which gushed, "Superheroes — let's face it — are totally hot." There was a twist: Duralde's "Superman Returns" story was not in Entertainment Weekly or Newsweek or Premiere. It ran in the May 23 issue of the Advocate, the prominent national gay magazine, next to the headline: "How Gay Is Superman?" Man of Steel has been missing from the movies for 19 years, and now that he's scheduled to fly...