Box office: $431,200 William Friedkin, best known for directing "The French Connection" and "The Exorcist," attempted a comeback with "Killer Joe," an ultra-violent film starring Matthew McConaughey, above, as a hit man hired by a man (Emile Hirsch) to kill his mother for the insurance money. The movie earned its MPAA NC-17 rating for "graphic, disturbing content involving violence and sexuality and a scene of brutality." In the film's opening scene, Gina Gershon's character opens the door wearing only "a shirt and a snarl," writes Los Angeles Times critic Betsy Sharkey in her review of the film. "That sets the tone of all that follows. It is also one of the full-frontal shots that helped earn 'Killer Joe' its NC-17 rating, along with a good deal of extreme violence, though I'd bet the sexually twisted subtext is what sealed the NC deal." MORE: Did NC-17 rating stop moviegoers from seeing 'Killer Joe'?