The we rewind and see more of the story-line. It is a very unique way of telling this story. Unlike other editing techniques that annoy the viewer, this one keeps the viewer's attention. It is as if we are getting the plot in instalments. It works very well for this film.
Memento is also a well acted film.
The characters are all excellent and portrayed by the actors with flawless precision. This independent film needs better exposure. It should be shown in main stream theaters. Memento makes many societal statements about life and why we are who we are. It makes us question our memories and the role they play.