I've recently discovered The Hathaway Family Plot. They're a sorta experimental music collective. Their music sound a bit like The Residents, a bit like Einstürzende Neubauten, but mostly like nothing I've heard before. 
Some of it is pretty hard to listen to, and a slapdash. I generally like though, and it's free.

Here you may download Wal*Mart Approved Music, which isn't.