“Birdman” is being touted as one of the movies of the year. Certainly it is the best one by Alejandro G. Iñárritu since his 2000 feature, “Amores Perros.” Dizzying, stagy, and constantly on the move, this show-biz comedy turns all the director’s normal delusions of grandeur on their heads – and then levitates them. Literally. […]