Men Behind The Sun (1988, Directed by Mou Tun Fei) Synopsis: A film about the World War II atrocities committed by Japan in Unit 731, a biological weapons experimentation program run by the Imperial Japanese Army. Why This Film Was Chosen: It's probably the most well-known Category III film ever made (Category III is a Hong Kong rating that's equivalent to America's NC-17 or Britain's 18). Key Disturbing Moment: A guy test subject is put in some kind of pressure chamber that causes his intestines to snake out of his anus. vs. Cannibal Holocaust (1980, Directed by Ruggero Deodato) Synopsis: An NYU anthropology professor is hired by a PBS-like broadcasting corporation to find a team of documentarians in the Amazon rainforest. After he finds their remains, he comes back to the States to screen what was contained in their film canisters, and the rest is exploitation cinema history. Why This Film Was Chosen: Because it's considered by many to be the most disturbing and controversial film ever made. Key Disturbing Moment: The aforementioned documentarians marvel at a dead tribal woman who looks to have been skewered on a pole that was inserted through either her anal or vaginal cavity and which protrudes out of her mouth.