Check out this cool flow chart called "Time Travel in Movies" that does a great job of breaking down all the time travel films that have been made. It was created by designer Mr. Dalliard, and it points out all of the details of how time travel works in each movie, and what differentiates them from each other.
Source: Firstshowing (http://www.firstshowing.net/2013/spoilers-intelligent-flow-chart-breaking-down-time-travel-in-movies/)