John Malkovich acted in The Killing Fields.
John Malkovich . He has also appeared in films such as Empire of the Sun , The Killing Fields , Con Air , Of Mice and Men , Rounders , Ripley 's Game , Knockaround Guys , Being John Malkovich , Shadow of the Vampire , Burn After Reading , RED , Mulholland Falls , Dangerous Liaisons , and Warm Bodies , as well as producing films such as Ghost World , Juno , and The Perks of Being a Wallflower . The Killing Fields is a 1984 British biographical drama film about the Khmer Rouge regime in Cambodia , which is based on the experiences of two journalists : Cambodian Dith Pran and American Sydney Schanberg . Sam Waterston stars as Schanberg , Haing S. Ngor as Pran , Julian Sands as Jon Swain , and John Malkovich as Al Rockoff .