Rzewski is one of my favorite composers, and this piece De Profundis is one that I find to be particularly moving. It is based on the work by Oscar Wilde of the same name, and this is a recent (2009) performance of the work by Rzewski himself. It is a shame that there is no video, as the work has some performance elements, but this recording is one of my favorites of this great piece!
I recently performed Mark Oliveiro's piece Baayami: From the Sky again (and have another upcoming performance in a few weeks) so I have been listening to quite a bit of Aboriginal music to get into groove of doing that work. The didgeridoo is an awesome instrument, and there are many great clips on YouTube of some awesome players killin it.
Moondog (Louis Hardin) is an interesting character and composer. He was blind, deliberately lived on the streets, and used to dress as the Norse God Odin. I think this album is awesome, and worth having a listen to!