I was searching for old school metal, saw this post and so joined. Here is a new, free Old School Metal station at Slacker. You can add bands or tweak it however you like.

http://www.slacker.com/?sid=stations/2246587/1654

And here is the description....
Classic Metal on Slacker Radio plays music from the artists that established and helped define Heavy Metal. From '81 to '91, Classic Metal delivers head-banging tunes from ass-kickin' bands like Metallica, Judas Priest, Iron Maiden, Megadeath, Black Sabbath and many more.

I prefer Thrash Metal. I guess that bleeds into Speed and Death metal a little too.

Just a few bands
1. Dark Angel
2. Dead Brain Cells
3. Morbid Saint
4. Razor

Sodom-Agent Orange

And of course TYPE O NEGATIVE! ;)

All the above !

I like the following old school metal bands:

Black Sabbath
Ozzy
Metallica
Guns N' Roses
Ac/Dc
Def Leppard

Overkill
Flotsam&Jetsam
Warrior Soul
Anthrax
Fates Warning
Sanctuary
Testament

Overkill and Testament were definitely on the top of my list. Alex Skolnick is awesome. :)

Dudes it's OLD SCHOOL HEAVY METAL. That eliminates
System of a Down, they are not old school nor are they METAL!
Also eliminates Godsmack, and Tool. Not old school and they are what is know as NuMetal, completely different from HEAVY METAL
Def Leppard could have been considered Metal on their first album Hi and Dry, and maybe even Pyromania but after that, LAME.
Rush - NOT METAL Beginning Industrial
Pink Floyd - NOT METAL - Psychedelic
Rainbow - NOT METAL - R N R

TYPE O NEGATIVE NOT OLD SCHOOL METAL, NOT EVEN TALENTED.

In all truthfulness contrite has really the only TRULY METAL list.

Sorry to burst your bubbles.