Hm, did I never specify which bands I like? Must correct that then.
A (relatively) small selection:
Big Three of Teutonic Thrash Metal
Sodom
Agent Orange
In War And Pieces
Destruction
Final Curtain
Hate Is My Fuel
Kreator
Enemy of God
Impossible Brutality
Other
Stratovarius (Finland, power metal)
Black Diamond
Under Flaming Skies
Rhapsody of Fire (Italy, symphonic power metal)
Emerald Sword
From Chaos to Eternity
Luca Turilli (Italy, symphonic power metal)
The Ancient Forest Of Elves
Mother Nature
Note: Solo project of Rhapsody of Fire's (former) lead guitarist
Sabaton (Sweden, power metal)
40:1
Screaming Eagles
Alestorm (UK, folk metal/"True Scottish Pirate Metal")
Keelhauled
You Are A Pirate
Evile (UK, thrash metal)
Thrasher
Eternal Empire
Iced Earth (USA, power metal)
Melancholy
Dystopia
Sons of Liberty (USA, power metal)
Jeckyll Island
Indentured Servitude
Note: Side-project from Iced Earth's rhythm guitarist Jon Schaffer. VERY politically charged!
Helloween (Germany, speed/power metal)
I Want Out
Paint A New World
Trans-Siberian Orchestra (USA, progressive metal)
Christmas Canon Rock
Mozart And Memories
Note: Anyone who's seen Christmas lights displays probably heard at least one of their songs
Razor (Canada, thrash metal)
Evil Invaders
Decibels
Aneurysm (Italy, post-thrash/"cyber metal")
The Clear Obscure
Methedras (Italy, thrash metal)
L.R.S.
Under
Symphony X (USA, progressive metal)
The Odyssey