The Sons of Lee Marvin
The Sons of Lee Marvin is a 'semi-secret society' established by American film director Jim Jarmusch as a joke. Members of the society reportedly include musician Tom Waits and actor John Lurie, both of whom have worked with Jarmusch on several occasions. Richard Boes and another musician, Nick Cave are also members.
Entry criteria for the club is that the person must have some physical resemblance or plausably look like a son of the actor Lee Marvin -- as such, women are not allowed to join. Most current members also share what seems to be a beat mentality in that they represent and express the lives of the down and out.
The club supposedly meets occasionally to watch Lee Marvin movies together. Its members perpetuate the joke in the media.