Leonard is an insurance investigator whose memory has been damaged following a head injury he sustained after intervening on his wife's murder. His quality of life has been severely hampered after this event, and he can now only live a comprehendable life by tattooing notes on himself and taking pictures of things with a Polaroid camera. The movie is told in forward flashes of events that are to come that compensate for his unreliable memory, during which he has liaisons with various complex characters. Leonard badly wants revenge for his wife's murder, but, as numerous characters explain, there may be little point if he won't remember it in order to provide closure for him. The movie veers between these future occurrences and a telephone conversation Leonard is having in his motel room in which he compares his current state to that of a client whose claim he once dealt with.
Overall, this is a great film that is worthy of a lot of your time. And trust me, it's going to take a lot of your time to figure this movie out. The acting is wonderful, the cinematography works great with the memory loss angle, and the telling of the story in reverse breathes a fresh breath of air into the movie industry. Guy Pearce(Leonard) is at his best in this film, as is Joe Pantoliano(Teddy). Carrie-Anne Moss(Natalie) deserves an honorable mention as well. If you're looking for a movie that will keep you guessing to the final moments of the film, then look no further than Memento.