It's impossible to watch Black Swan and not think of other films. This is not to say that Black Swan is bad or completely derivative---I loved it. But it explores a very specific set of themes that automatically link it to other movies, more specifically: mommy issues, dreams, paranoid schizophrenia, dance, toxic friendships, the supernatural, merging identities, sexual repression and/or naïveté, murder, lesbianism, perfectionism, self-injury, and betrayal. All of the following films contain at least half of these themes, if not more. If you loved Black Swan rent them now!
Black Swan, Rosemary's Baby, The Piano Teacher (not for the faint of heart), Showgirls (basically porn), Persona, The Red Shoes, Mulholland Drive, All About Eve, 3 Women, Suspiria, Images, Carrie, Sisters, and Repulsion. I also wanted to include Single White Female but Bridget Fonda's hairstyle is so god-awful and I didn't want to pollute this blog with it's ugliness!
ps. how amazing is the Showgirls/Black Swan mash-up trailer!