Alejandro Gonzalez Inarritu has won the Best Director Oscar for “Birdman,” his groundbreaking comedy-drama exploring inner voices and the desperation of acting. The Mexico native won over Wes Anderson for “The Grand Budapest Hotel,” Richard Linklater for “Boyhood,” Bennett Miller for “Foxcatcher” and Morten Tydlum for “The Imitation Game.” Linklater and “Boyhood” had been regarded...