Harry Partch
I've been getting into his music as of late... I think it's pretty cool... The guy invented his own instruments and made music for them. They are very primal and full of energy.
An excerpt/sample
He not only made his own instruments, but he put his own tonal scales and modes of composition onto them, which I as a bit of a music buff find very impressive. I believe it was something of a 43-note-based octave, or something along those lines.
Sometimes I wonder if I just got into this stuff, or if deep down, I've always liked it, even if I didn't know about it at the time.