Despite all the anonymity the film tried to cover itself with, it will get the attention it rightfully deserves, because it's not, as most movies of the same caliber, funny for the sake of fun. This is real comedy, and while it may not make you laugh uncontrollably, you will find a certain kind of humour that has not been attempted in a long time. Sometimes the writing is so funny, there is no actual need for dialogue.
This is not, strictly speaking, a comedy. There are a few dramatic aspects to it, as well. I give this a 9/10, although I think it deserves something closer to 8.5. Certainly one of the best films of 2011, simply for being... simple!