In Atom Egoyan's under-rated 1994 film EXOTICA, many scenes take place in an adult dance club. Towards the beginning of the film, the character Christina (Mia Kirshner) starts dancing to the song "Everybody Knows" by Leonard Cohen and collaborator Sharon Robinson. During the song she does very specific moves that seem like sign language.
It is a Canadian film, so I wouldn't immediately assume it's ASL (American Sign Language), plus I don't know enough about ASL to recognize it, as opposed to stylized dance.
If it is sign language, what is she saying? It's a sad and beautiful movie with many layers and reveals. I imagine this might be another one hidden to people who don't understand signing.
EDIT : I am not asking if she is signing the lyrics. I just wonder if it is a message.