We all engage in self-deception to feel content. It’s not until you encounter a film like Memento, or perhaps experience firsthand someone dealing with similar issues, that you’re reminded of how precious and vital your memory is—and especially that it serves as an important protection for you. Christopher and Jonathan Nolan created what is considered one of the finest films of 2000, exploring these aspects of human nature. The story centers on Leonard Shelby, portrayed with remarkable realism by Guy Pearce, who has lost his ability to form memories due to a head injury sustained while trying to help his wife, who was raped and murdered. He retains recollections from before that event but cannot create new ones afterward. This leaves him questioning who he can rely on; are any of the people around him genuine? To aid in remembering, he covers his body with tattoos and constantly writes notes, navigating a world now unfamiliar to him while pursuing the man responsible for destroying his life. Christopher Nolan immerses the viewer directly into Leonard’s reality. The film's reverse storytelling structure is intentionally intricate and clever because it begins with what would normally be the conclusion! Some have suggested that this technique is merely stylistic—a case of form over substance—but the construction of each scene within the narrative demonstrates a high level of craftsmanship; everything contributes to the whole, demanding close attention from the audience, as we are essentially prompted to reconstruct earlier parts of the story. The sense of mystery remains throughout, with those currently in Leonard’s life potentially having conflicting intentions, keeping us on edge through confusion, deceit, manipulation, puzzles, and the pervasive theme of amnesia—all infused with a neo-noir feel. And the Nolans clearly understand noir conventions, incorporating a narrator who is himself difficult to define or trust! While reverse storytelling wasn't an original concept in 2000, Christopher Nolan expanded upon it, adding his own unique elements, alongside David Julyan’s musical score that transitions from mournful premonitions to intense anxiety. The inclusion of an optional chronological viewing demonstrates that the film remains a compelling thriller even without the reverse structure. It's excellent. 9/10

Source on TMDB