You might have done a double-take Wednesday at Universal’s Islands of Adventure. Could that be director James Cameron (center, blue shirt) in the shadow of Hogwarts? The King of the World at the Wizarding World … of Harry Potter? Sure could. We know he’s in Central Florida because Disney World posted that on its blog this week. He’s been scoping things out at Disney in preparation for the upcoming expansion of Disney’s Animal Kingdom with a land devoted to his “Avatar” films.