http://endeavor.med.nyu.edu/lit-med/lit-med-db/webdocs/webfilms/memento155-film-.html
A useful companion text might be "The Lost Mariner," Oliver Sacks's account of Jimmie G, a patient with the same kind of memory loss resulting from Korsakov's Syndrome (see The Man Who Mistook his Wife for a Hat, in this data base). (It may be a deliberate allusion that the suspected killer in Memento is called "John G or Jimmie G . . . ")