la jetée
Chris Marker's famous ciné-roman (film-novel) 'La Jetée' (1962), only half an hour long and comprised almost entirely of black and white stills, remains one of the best science fiction films of all time. Compared to its remake, 'Twelve Monkeys', it is a wonder of simplicity, a profound meditation on time and memory.

Both the original French version (no subtitles) and the English version are at Google Video. (Via Kottke.)