Director Alejandro González IñárrituWritten by Alejandro González Iñárritu, Nicolas Giacobone, Alexander Dinelaris, Armando Bo, (based on story by) Raymond Carver Michael Keaton, Edward Norton, Emma Stone, Zach Galifinakis, Andrea Riseborough, Amy Ryan, Naomi Watts. Somewhat forgotten movie star Riggan Thomson (Keaton) is trying to bring a Broadway play to life, but is having issues with…