The studios behind the new "Narnia" movie are walking a tightrope in their quest to promote the third film in the fantasy franchise to a Christian audience and to general moviegoers. But they also are going out of their way not to pigeonhole the film as something that will appeal just to the world's 2.2 billion Christians. Case in point is Liam Neeson, who voices Aslan, the resurrected lion in the upcoming film. The actor said at a news conference last week that his character doesn't necessarily represent Christ. That might be news to Lewis, though, who wrote the opposite...