The Aristocrats
Directed by Paul Provenza

Close to 100 comics spin baroquely disgusting variations on one classic dirty joke. That's the whole movie, and it's hands down the funniest of the year, both pushing the boundaries of bad taste and exploring how those boundaries keep shifting. Gilbert Gottfried, Sarah Silverman, Bob Saget and a mime are standouts. The cumulative effect is oddly uplifting: it may be (and feel free to quote me) the first feel-good movie made out of fecal matter.