Hidden images in “Black Swan”
During the dance club sequence most of the people surrounding Nina are either visions of herself, Lily, Thomas, or other aspects of the Swan Lake ballet. The only spot you can clearly see flashes of Nina as the Black Swan on the dance floor is when the voices chanting Nina’s name are playing. Although most of them are nearly impossible to pinpoint while watching the film at full speed, there are over 1,000 manipulated images in the 45-second scene. 

(Source: 100newfears, via littlemousedeer)