Well, I've heard some weird bands in my time, but Nocturnal Neurosis is certainly one of the weirdest. Not a lot of information on this band. I only know that the guy lives in South Africa and that you can download the songs from his two demo-albums from the official blog. Go to nocneur.blogspot.com
Just beware - the music is very unsettling. I don't know, but I think this guy is mentally screwed and totally insane.