"The Killing Fields of Dr Haing S Ngor" is a carefully-made documentary based on Dr Ngor's own treasury of his improbable life's images and words. We see astonishing films of Cambodian history, little known to Americans, and Dr. Ngor's life--both improbable and heroic. First, Haing was a Cambodian son with a medical degree, enjoying his position of wealth and power; then a prisoner of the brutal Pol Pot regime until, by chance and astonishing good luck, he came to America only to be offered the role of Dith Pran in "The Killing Fields"(1984) for which he was one of three Asian actors to win an Academy Award. His story is remarkable and should be better known. Thanks to Arthur Dong's excellent film it can be.