“In the last few years, two American filmmakers, Vincent Gallo and John Cameron Mitchell, have depicted actual sex in their films — and have not been shy about admitting it. Recently, the Oscar-winning director Ang Lee earned an NC-17 rating for his ‘Lust, Caution.’ These films and (HBO show ‘Tell Me You Love Me’) fall under ‘hard-core art,’ said Linda Williams, a professor at the University of California, Berkeley, and author of books on both pornography and cinema.”