Vanilla Sky
Cameron Crow has said time and time again that he wished he made the ending much more ambiguous. A lot of fans would have to disagree; it's open-ended enough for the average viewer! Is he still dreaming, or is he alive?
Just Dreaming
The movie reveals that Tom Cruise's character is actually dreaming. The last scene gives him a choice: to stay dreaming or jump off of a building to wake himself up. The very last image is us seeing his eyes open, but we never saw him jump off of the building or not. Crowe has said that he chose to wake up but felt that the image of his eyes opening was too obvious. For most viewers, it wasn't!