Theres a fantastic folk band from Santa Cruz named Blackbird RAUM you guys should really check out. Their main influences are anarchist punk and 1920s american string. Accordian, banjo, washtub bass, washboard, musical saw, and mandolin are the instruments they play. Put on a hell of a show too. Imagine a mixture of moshing and dancing like a mad man. their myspace if youre interested: http://profile.myspace.com/index.cfm?fuseaction=user.viewProfile&friendID=377166427 and website: http://anti-politics.net/raum/
Mischief Brew is an awesome band live. I have been searching for more music like this. + Rep on a great recommendation.