Matthew McConaughey has successfully burst out of his rom-com treadmill and made his mark in some dark and fascinating projects this year. In BERNIE — the Richard Linklater true-story film in which mortician Jack Black kills rich lady Shirley MacLaine but pretends she’s still alive — McConaughey had fun as the heat-seeking D.A. thrust into the case who makes things even more strangely comical. In MAGIC MIKE, he was Dallas, the owner and MC of a male strip club, a guy for whom squeals and screams are the preferred soundtrack of life. And now, he gets his most offbeat role of all in KILLER JOE, the William Friedkin-directed adaptation of the Tracy Letts play that centers on white trash at each other’s throats, with McConaughey’s character calling the dirty shots.