Ballet may not be an art that holds wide appeal but this fact should not prevent filmgoers from viewing Darren Aronofsky’s latest work, Black Swan. The director meant for this to complement The Wrestler, another film about a performer sacrificing themselves for the sake of their art. The series is significant and sophisticated so it can be enjoyed even if the subject is totally ignored. Natalie Portman plays Nina, a ballerina growing into her first major role, the lead in Swan Lake. Nina is technically gifted but dispassionate, unsure about what she wants for herself. Portman took this role because …