I don't think you think of Science Fiction often when thinking about Lars Von Trier. Yet, his 2011 masterpiece Melancholia is one of, if not the best, science fiction film(s) ever.
Lars Von Trier is an interesting filmmaker. He directs mostly very depressing movies that are very hard to watch. Breaking The Waves is an interesting case study in his filmography because on some weird level this is one of the rare examples of a Lars Von Trier film with a happy ending. Even though you could perhaps argue that the ending is nowhere near happy at all.