I stared at a blank screen for a long time before I started typing this review, mainly because it was hard to think of how much I could possibly say about Sunshine Cleaning that would make it sound any different from or more substantial than the hundreds of other quirky American indie dramatic comedies and comedic dramas that clog the festival circuit each year. And it’s true this sounds deadly precious on paper. It’s the story of a single mom, dreams dashed, who’s having a tough time making ends meet while taking care of her impulsive, socially awkward son and keeping tabs on her lovably dotty father. She eventually pools resources with her sister to start a business dealing in death, which leads to a whole new perspective on life. It all sounds pretty banal. And then I had a realization: It’s the performances, dummy.