Birdman is a 2014 American comedy film co-written, produced, and directed by Alejandro González Iñárritu and starring Michael Keaton. Keaton plays a faded Hollywood actor famous for his superhero role who tries to mount a comeback on Broadway.
A Broadway crew member is briefly shown watching the scene of Peter Griffin consulting a painting & statue of his ancestors from "No Country Club for Old Men" around 25 minutes into the film.
An image of Neil Patrick Harris in his underwear in "Underage Peter" was taken from the 2015 Oscars when he took the stage in a parody of Birdman.[1]