I was thinking of some great metal covers...here are some of my favorites.
Priest - Diamonds and Rust & Green Manalishi
Metallica - Whiskey in the Jar
Death - Painkiller
Pantera - Planet Caravan
Slayer - Dissident Aggressor
Shadows Fall - Welcome To The Machine
Gary Moore - Shapes Of Things
Metal Church - Highway Star
MOD - In the City
Priest - Diamonds and Rust & Green Manalishi
Metallica - Whiskey in the Jar
Death - Painkiller
Pantera - Planet Caravan
Slayer - Dissident Aggressor
Shadows Fall - Welcome To The Machine
Gary Moore - Shapes Of Things
Metal Church - Highway Star
MOD - In the City