Inside Llewyn Davis
Trailer: http://www.youtube.com/watch?v=X8eKgUW5XxQ
Review: http://www.nytimes.com/2013/12/06/movies/inside-llewyn-davis-directed-by-joel-and-ethan-coen.html?pagewanted=2

The NY Times review is very matter of fact and tells me what I already knew about the movie.  It would be useful for someone who wants to ruin the movie before they see it or annoy someone who has already persevered through the 1 hr 45 min. run time of depressing disappointment.  The movie, as a film, breaks no rules, and provides an interesting story for the viewer who wants to root for Lewyn Davis, who never wins.  I recommend this movie to someone who wants to feel sad for a couple of hours, but then feel better about their life because there's little chance you could experience more failure than old Llewyn.