Memento is a book.
Memento is a 2000 American neo-noir psychological thriller film directed and written by Christopher Nolan , and produced by Suzanne and Jennifer Todd . Memento is presented as two different sequences of scenes interspersed during the film : a series in black-and-white that is shown chronologically , and a series of color sequences shown in reverse order ( simulating for the audience the mental state of the protagonist ) . It received numerous accolades , including Academy Award nominations for Best Original Screenplay and Best Film Editing . The film was subsequently ranked one of the best films of the 2000s by several critics and media outlets .