Let's help you acquire the taste.
You could start off with some vintage metal - Sabbath, Priest, Saxon or dive into the 90s bestsellers - Metallica, Megadeth, Testament and then there's the current crop of headbangers - Slipknot, Korn, Lamb of God, Rammstein.
And there's some good blended metal, especially from Mongolia - The HU Band
and Nine Treasures -
If all that's a little too much, you can recover with some of this folksy groove from Omnia
CHEERS!