Birdman. At first I wondered why Iñárritu was sticking all that magic realism into a perfectly good New York backstage drama. It made me suspicious; maybe, I thought, he just didn’t want it to be All About Eve all over again, and that’s why he gave the central character, Riggan, washed-up former star of an old superhero franchise, the superhero himself as an alter-ego who spurs him to narcissistic fantasies and then (spoiler) destruction — you know, the way Jimmy Cagney told Raoul Walsh, when they were trying to figure a way to make Cody the gangster in