Six Shooter is one of my favourite short films, written and directed by Martin McDonagh, of In Bruges fame. This Oscar-winning short showcases some of his style and themes that he’ll later come to revisit, the dark comedy that he does so well. (Caveat: I’ve still not seen Seven Psychopaths)
Update: The YouTube link has expired, but you can pick it up on iTunes. And I have now seen Seven Psychopaths.