...But check out the nightclub scene in Black Swan frame by frame.
There's a scene in the movie where Natalie Portman and Mila Kunis go dancing at a bar, and there's sort of a strobe light effect going on. Whilst viewing this in the theater, I thought I caught a glimpse of the character Rothbart from the ballet. I'd forgotten this, but when I was watching it on dvd this weekend, I saw a frame where Natalie Portman is wearing her swan make-up from later in the film.
I started at the beginning of the scene and took it frame by frame. Most of it is just a distorted, funhouse type view of the dancing, but sprinkled in are some really bizarre images, including the ones I mentioned. There are a few frames where you just see a close-up shot of her swan eyes, and one where she and Mila are framed by a bunch of butterflies, kind of like a desktop wallpaper that someone might have created.
Weird, wild stuff. Just another layer to a really brilliant movie.