5. Men Behind The Sun (1988)
A very bleak film about wartime atrocities - this time Japanese war crimes against the Chinese - Men Behind the Sun has plenty of gross out moments that would be right at home at rotten.com. In the film we follow life in Unit 731, a concentration/medical camp which has a mandate to create a biochemical weapon that will carry bubonic plague. There are lots of gruesome experiments on the prisoners, and as the war turns against Japan, the experiments grow nastier and nastier. Two particularly ghastly scenes stand out. One is of a man placed in a decompression chamber - his intestines shoot out of his anus. Another is of a woman having her arms frozen and then boiling water poured over them so that the skin literally sloughs off. Men Behind the Sun lives up to its reputation of being one of the most mean spirited and revolting films of all time. It is an incredibly angry attack on Japanese actions against China in World War Two and this anger is channeled into the depiction of vile atrocities which induce severe nausea in the viewer.