GUINEA PIG: THE DEVIL'S EXPERIMENT & GUINEA PIG: FLOWER OF FLESH AND BLOOD

A woman is tortured to death in this Japanese "snuff" movie which purports to be found footage (and which upset Charlie Sheen so much that he asked the FBI to investigate). The artier sequel, in which another woman is dismembered and eviscerated, was directed by legendary horror manga artist Hideshi Hino.