Well, it's sunday and I have tried to watch a film that I miss watching and today it seems impossible to find exept on dvd.The film is " Youth Without Youth" based on a novel by the Romanian Religions Historian, Mircea Eliade.
It is a fun story about a guy that develops special powers after having an accident. At a certain point he starts comunicating with a "double". What's interesting about this is that the story is an allegory of the alchemical process and most probably the way that the author found to share some of his own experiences.
More than this may be Carl Jung and the entities that came out of his unconscious to teach him. This can be found in his autobiography freely available online.
Hope this helps somehow.