Wong Kar Wai's Happy Together.
Pedro Almodovar's La piel que habito (The Skin I Live In).
Xavier Dolan's Les amours imaginaires (Heartbeats) and Laurence Anyway (though I have not seen this one).
Lionel Baier's Gar?on stupide (Silly Boy - made by a friend of mine and awarded in several LGBT festivals).
John Cameron Michell's Shortbus.
Alain Guiraudie's L'inconnu du lac (Stranger By The Lake - not seen this one, but critically acclaimed).
Olivier Ducastel and Jacques Martineau's Jeanne et le gar?on formidable (Jeanne and the Perfect Guy).
To close this short list made from the top of my head; an UFO (Unidentified Film Object):
Toshio Matsumoto's Bara no s?retsu (Funeral Parade of Roses).