OK, maybe I should start out with being a dick, and post the positive stuff later.
Linkin Park is not metal. Neither are Slipknot or Korn, or any "rap metal" band. As most of you are aware, these bands are called "nu metal". This is a very misleading name, as these bands are technically speaking not metal. I'm not expressing a dislike towards these bands (though I don't like them, personally), I'm just stating the facts. Nu metal is a genre, or rather a group of styles, that incorporates different musical styles like metal, punk and rap in their music. While it definitely takes some elements from metal, and may sound very similar to metal for those who aren't familiar with the genre, they can't technically be called metal.
Quote from ahoaho
Yeah, I guess the reason that I don't listen to Power Metal is because I'm not a gamer...
I agree that Power metal, much like folk metal, can be very geeky at times, but I still like it very much. Not all bands are all about dragons and epic battles. Some of the less geeky bands include Sonata Arctica and Helloween. The genre still seems to be the odd one out, mainly because the lyrics are usually different from the classic metal themes and tend to be more about mainstream themes (not derogatory) like romance (but not in a perverted/obscene way like for example black metal bands).
So the positive stuff.
Most of the stuff I listen comes from Northern Europe. I believe that the metal scene there has been the most innovative for the last 20 years, giving birth to different genres like black, power and folk metal, as well as giving many melodic subgenres of already existing genres there final form. (like melodic death, which was greatly influenced by bands like Death and Carcass, but was made popular by more recent bands like Arch Enemy, In Flames and the likes.) Of course other countries bring great bands too, but the Scandinavian metal scene is one of the biggest. (and best imo)
Bands I like: (not nearly a complete list)
Heavy metal:
Judas Priest
Sinergy
Iron maiden (I'm not gonna make a separate section for NWOBHM)
Trash metal:
Don't like it
Death metal:
Death
Morbid Angel
Nile
Melodeath:
Arch enemy
Carcass
Norther
Amon Amarth
Black/symphonic black metal:
Satyricon
Emperor
Carpathian Forest
Graveworm
Opera IX
Theatres Des Vampires
Behemoth (blackened death metal)
Cadaveria
Astarte
... (lots of different bands I've heard of, but mentioning them here would take too much time)
(melodic) Power metal:
Kamelot (They rule.)
Sonata Arctica
Epinikion (doubt you've heard of them)
I used to listen to Nightwish a lot, but they've really gone downhill lately.
Symphonic metal:
Haggard (check these guys out! Google 'the final victory')
Visions of Atlantis
Apocalyptica
Not a big fan of the genre, though the above three, especially Haggard, are good.
Doom/goth metal:
Tristania
Sirenia
Theatre of Tragedy
Leaves' Eyes
The Sins of thy Beloved
Moonspell
Sentenced
Tiamat
Paradise Lost
Type O Negative
Erben der Schöpfung/Elis (same band that changed it's name)
My Dying Bride
... (lots and lots of other bands)
Avant-garde metal:
Ram-Zet
Progressive metal:
Symphony X
Folk metal:
Ensiferum
Fintroll
Elvenking
Die Apokalyptischen Reiter
Wintersun
Industrial metal:
Samael
Deathstars