20. Martyrs (2008)
Director: Pascal Laugier
French writer-director Pascal Laugier's Martyrs is essentially two movies in one, and neither one is recommended for the squeamish. Before the hard-R-rated shocker takes a sharp left turn at its midway point, Martyrs rests gruesomely in home invasion territory, with Clive Barker-like supernatural elements mixed in for good measure. But then Laugier's script veers into existential, slow-burning dread, and once it's all over, Martyrs asks heavy questions about the afterlife and almost provides some answers. With skinning, of course.