I'd suggest trying some "roots" metal as well - Black Sabbath, Judas Priest, Iron Maiden etc. If you're into more technical stuff like Megadeth and Iced Earth, you may find that progressive metal (Queensryche, Dream Theatre, Blind Guardian) and alternative/technical metal (Chimaira, Lamb of God, the Dillinger Escape Plan) appeal to you as well. Right now I'm rocking a band called The Number Twelve Looks Like You - interesting, to say the least. But I think you will find that the more you listen to metal, the more you will gain an appreciation of other styles of music. :)
And don't forget Bol!