I opted to see this at the last minute, instead of Interstellar, because I worried that Interstellar might have too much of a feeling of self-importance about it for an early Saturday matinee. Hoo boy. There is no doubt in my mind that I made the wrong choice. Birdman wants to say something about what it means to be an artist — what it means to invest your heart and your soul in a project and to be racked with anxiety over the potential outcomes: fame! fortune! ruin! mockery! — but the chosen method of delivery is a hoary old backstage drama bereft of ideas.