The Roots of Metal

I'm not gonna pretend that I know a lot about this genre because I don't, but recently I've had a growing respect for it. From what I've gathered, Bad Brains and Exodus are considered to be some pretty solid oldschool metal. I like it and I hope you do too.

Bad Brains "I Against I" (I Against I, 1986) -

http://www.youtube.com/watch?v=kjITD9LnwRY

Exodus "And Then There Were None" (Bonded By Blood, 1985) -

http://www.youtube.com/watch?v=0a-Sh9Ik-lI