My next pick is of the most mind-bending, and probably realistic, views of time travel yet: Primer
With a budget of only $7000, it tells the story of Abe and Aaron, two of four wannabe inventors trying to get a break for their start-up business. Inadvertently, they invent a way of time travelling. Primer tells their story in an uncompromising, and necessarily, complicated way. This is what might
actually happen if you can interact with your own self.