Memento
In its simplest form this is a revenge movie. The wife of a man is raped and murdered while he sleeps in the next room.
This makes the man, Guy Pierce, to be so traumatized as to be incapable of forming new memories. Because of its short-term memory is nonexistent. Know someone in 5 minutes and forget what they are, vital information remains tattooed on different branches, and a group of photographs to help you remember people and places.
The performance, in particular by Guy Pierce, is 
excellent by all cast members. The picture uses a variety of techniques that contributes to the overall atmosphere of the film.
Be patient with this film. Do not give over the first 20 minutes as it does not seem to make sense.
You will be rewarded by an intense piece of original film, is not common in this day of the blockbuster numbers. As a well and, ultimately rewarding the recipe, the various ingredients of this film is added gradually and mixed together to form a DVD all to do.