3. JEREMY RENNER AS JEFFREY DAHMER IN DAHMER (2002)

Less-informed movie heads know Jeremy Renner as the now-twice-Academy-Award-nominated scene-stealer who’s set to play Hawkeye in next year’s The Avengers. But lovers of all things serial-killer-cinema should undoubtedly recognize him as the star of 2002’s squirm-inducing biopic Dahmer. Playing the notorious mass murderer, Renner lures dudes behind closed doors so he can photograph them, masturbate to the pics, and then conduct vile experiments on their bodies before chopping off limbs for later snacks. Unlike the other cannibals on our list, Dahmer is real, and that, our friends, is what’s truly disturbing. Makes you never want to leave the house, doesn’t it?