Two movies about a woman in a high pressure environment who is unsure of what is real and what is not, and must come to terms with her desires — it's Black Swan vs Deadly Illusions.
Killer Instinct: Taxi Driver vs American Psycho 2
If I'm going to watch someone plot a murder, I'm bypassing creepy shaved head Robert De Niro in Taxi Driver and going right for one-liner loving Mila Kunis in American Psycho 2.