Strapping Young Lad is win.
Let's rock this joint...
PROGRESSIVE METAL:

Children of Bodom - the perfect blend of growling vocals and progressive instrumentals

Dream Theater - gods of progmetal

Evergrey - dark and heavy

Symphony X - progressive with a neo-classical taste
POWER METAL:

Blind Guardian - fathers of power metal

Rhapsody of Fire - dragons, swords, and war - what more could you ask?

Sonata Arctica - coming into their own, giving Stratovarius a run for their money

Stratovarius - gods of power metal
CHICK-FRONTED METAL:

After Forever - earlier works were better, beginning to fall a little more mainstream now

Lacuna Coil - the chick knows how to ROCK

The Gathering - my favorite vocalist, though they're starting to fall more under Rock anymore

Tristania - beautiful, haunting, heavy

Within Temptation - really filling out their sound in the last few years
DARKER METAL:

In Flames - one of the foremost melodic death metal bands

Nevermore - progressive death metal, dark and depressing


Opeth - not only a beautiful logo, but beautiful music

Type O Negative - you can't have the perfect list without PETER STEELE!
p.s. OMGZORZ BURZUM AND BATHORY!!!