This is a review from the IMDb website, explaining possibly why the film is doing so well, and what aspects make people want to watch it;
The visuals and editing are the drive of what helps make the film so well done. Contrasting blacks and whites so frequently give the obvious hints of good and evil, innocence and darkness. But Aronofsky likes to throw in hints of ambiguity at every turn, changing the colours for each character depending on the scene, and depending on what they may or may not be doing. Even the scenery and set design is in plain black and whites, always making the audience guess the true motivations and intentions of both character and creator. Adding in the element of reflection, both in others and the self (mostly through mirrors), only helps compound these feelings of ambiguity and confusion. It will consistently keep audiences thinking about what is being shown and what is actually going on. The subtle visual effects and astoundingly well done score only help add to the greatness.
Other reviews from IMDb can be accessed through this link:
Another positive review from Kirk Honeycutt admires Darren Aronofsky’s work and states what he believes makes the film so enthralling:
First there was the Phantom of the Opera. Now, in Darren Aronofsky’s “Black Swan,” you get the Terror of the Ballet. The movie combines horror-movie tropes with “The Red Shoes,” “All About Eve” and every movie about show business that insists you don’t have to be crazy to become a star but it doesn’t hurt either. The movie is so damn out-there in every way that you can’t help admiring Aronofsky for daring to be so very, very absurd.”Swan” is an instant guilty pleasure.
Another positive review written by Black Sheep Reviews applauds the film for its outstanding performance:
BLACK SWAN is as theatrical and as dramatic as any ballet that I’ve seen performed on stage. Aronofsky directs but, from behind the camera, he dances alongside the dancers as if he was part of the choreography, forming some hybrid of dance and film that begs repeat performances. It also warrants a resounding standing ovation.
The film has received some negative reviews as well, this written by the Los Angeles Times:
You won’t be having a lot of fun at “Black Swan,”but the less seriously you take this wildly melodramatic, unashamedly pulpy look at the blood sport that is New York City ballet, the better your chances are of enjoying yourself even a little. In fact, the only problem with calling “Black Swan” sensationalistic and over the top is that it makes this shameless shotgun marriage of “The Red Shoes” and Roger Corman sound like more fun than it is.