La Moustache (2005)

Emmanuel Carrère's psychological mystery La Moustache stars Vincent Lindon in an outstanding performance as a man who inadvertently loses himself. Marc Thiriez is a successful architect who decides one day to shave off the trademark moustache that he's worn for years. When his wife and his friends fail to notice the change he sins into a downward spiral that makes him doubt his own sanity. Is Marc the victim of some elaborate conspiracy or has something in the world's order gone terribly awry?