This may be one of the best well thought out movies I have ever seen that ultimately is a love story. Never before have I seen a movie that goes from selfishness to a love story so quickly. You begin thinking that this movie is about science fiction meets sixth sense kinda stuff but towards the end you realize its all been about saving the girl the main character Evan loves who in the end makes the ultimate sacrifice by sacrificing his life to save the girl because there is nothing left for him to do in the end, he's tried everything else. So he gives his life demonstrating true love in the purest of forms. This is what the butterfly effect is, it is a love story from beginning to end.
Review of The Butterfly Effect
