Generally I find this to be a good way to find new music on last.fm: find some incredibly obscure but good noise project created by some random person in their bedroom, and play their similar artist station. Because anyone who's gone to the effort to seek that music out will also have found loads of other unknown treasures. And now it seems that my project is no exception.
For future reference, here's the list:
Violent Onsen Geisha
Sshe Retina Stimulants