Zach Galifianakis Melts Down on Michael Keaton in 'Birdman' Clip — mashable.com

LOS ANGELES — As if Birdman weren't Hollywood-meta enough with Michael Keaton playing a washed-up former star of a superhero film franchise, he's now itching to kick Edward Norton's renowned but difficult stage-actor character off his play. (Norton, a two-time Oscar nominee and one of the finest actors working today, is known to be difficult and demanding — which is why Mark Ruffalo is now playing the Hulk in the Marvel cinematic universe.)

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