Surprised no one's mentioned Iced Earth's Tribute to the Gods CD. It's got 60s/70s covers from BOC, AC/DC, Kiss, and Black Sabbath.
**edit** and wow, Spiderpact teaches me to open a bunch of tabs and respond without refreshing.
Pain of Salvation - Yellow Raven (from The Scorpion's Virgin Killer)
Pain of Salvation - Yellow Raven (from The Scorpion's Virgin Killer)