It's telling that this film, ostensibly an adaptation of a memoir of a mother and daughter, often comes to life whenever it abandons this pretense and revels in the intoxicating power of Dunaway's Joan. The best scenes of Mommie Dearest shouldn't be here structurally, as Christina couldn't have witnessed them, but they exemplify Dunaway's formal dexterity, which mimics Crawford's presentational acting and intensifies an editorial sense of the neurosis that empowered it.