Moustache, La (2005)
La Moustache is quite a good movie. Some reviewers seem to have interpreted it differently, but I thought it portrayed a man, from his own perspective, falling into schizophrenia.
I probably just revealed my ignorance of schizophrenia, but there you have it. Good flick. Well acted, well filmed, generally nice characters, good story.
French with English subtitles.