Best twist in the end films- Part 1

Friends, the movies which Iam going to write now are few good movies that have great twist in the end. The movies with great twists in the end, that I remember is-
1) The Sixth Sense- This movie directed by Manoj Night Shymalam is an master piece that I can never ever forget. The film had descent plot, and it was like an normal ghost story, but in the end their was this great twist of Bruce Willis being one of the ghosts all the time. I was really shocked when I first watched this movie in the theatre. This is an must watch film for all those "Twist in the End" lovers.
2) High Tension- This movie is another great movie with one of those mind-blowing twists in the end. But many of my friends tell me that this movie is little bit over-rated. But I totally disagree with them, this movie was first released as an French film and due to its success it was again released in English as an dubbed version. This movie is definitely not for light-hearted people as because this film full and full of gore and violence. An ending that is so very good, High Tension, which have been one of my most memorable and disturbing slasher films in recent memory, ends with a great twist when it is revealed that the sexually charged killer, played by a man, is actually the female protagonist, who, driven by jealousy, has gone insane.
3) Donnie Darko- This is a golden movie of all time. This movie basically was low budget film but unfortunately even that amount didn't get turned up at the end of the day. But this is a all in all an really good film with good ending. Donald Darko the main character in the film, sleep walks at night. Donnie’s sleepwalking saved him from being crushed by a jet engine at the beginning of the film. But according to the movie if he is not being killed by the Jet engine then his mother and sister would have been killed in a plane crash one month after, his sister would have lost her boy friend as because Donnie himself would have killed him at the end of the film and he would have lost his girl friend in an car crash. Donnie decides to sacrifice himself and die so that his family can live happily.
These are my three best films that has great twist in the end.