The movie dark night was written by Christopher Nolan and also he directed it. His vision of characters is exemplary. For example joker an extraordinary character in this movie which just made stuck to this movie. Heith ledger , legendary actor as joker made new ways of villain acting also he won Oscar for this movie . I heard about him that he locked himself in a room for six months to come in character of joker. Unfortunately he died before getting Oscar.this is only movie you love villain more than hero. Must watch