Natalie Portman, Black Swan is Darren Aronofky’s masterful psychological horror movie about performance and paranoia. Portman is Nina, a ballerina who is on the cusp of either achieving her dream in the world of ballet or having her entire world fall apart. Nina is demure and dedicated to her art, but pressure from her director (Vincent Cassel) and the arrival of the free-spirited Lily (Mila Kunis) in her ballet company starts a chain reaction that forces Nina to reassess everything about herself. Barbara Hershey also stars as Nina’s domineering mother Erica.