Joel and Ethan Coen make movies a certain way -- a thumbprint that’s created some of cinema’s most powerful and delightfully lopsided features. They rarely miss, and even when they fail to live up to expectations, their pictures are exceptionally layered, idiosyncratic efforts that charm with their tight craftsmanship and impish sense of humor. “Inside Llewyn Davis” is perhaps their most challenging endeavor, asking viewers to process the existence of a man who refuses to get his life together, embarking on an aimless tour of his own misery with razor-sharp edges to his personality that cut those daring to get close. Evocative and steadfastly Coen-esque, “Inside Llewyn Davis” is nevertheless a chore to sit through, missing a certain snap that usually comes so easily to the filmmakers. Read the rest at Blu-ray.com