Last year, Doremus brought his sophomore feature “Douchebag” to the festival. The movie contained a devious tale of sibling rivalry, and was shot with a shaky-cam style and semi-improvised performances, two aspects of production familiar to anyone keeping tabs on low budget American cinema. At the premiere, Doremus mentioned that he had seen the quirky mockumentary “Paper Heart” at the festival a year earlier, which inspired his emerging technique. [Editor’s Note: This review was originally published during iW’s coverage of the Sundance Film Festival. “Like Crazy” opens in theaters this Friday.]