There are several genres and sub-genres of metal so I have a favorite for almost each one:
-Gothic metal- The Birthday Massacre is the best.
-Extreme metal- Cradle of Filth
-Alternative metal- Marilyn Manson and Slipknot forever because no one would ever be like them.
-Industrial metal- Mnemic, not many people know them but if you like Slipknot you may also like them.
-Nu metal- Korn or Limp Bizkit are really good.
-Metal- Bullet for My Valentine is the best one of the genre I know.

I don't remember the rest of the other genres.

extreme metal: lamb of god
alternative metal: marilyn manson, avenged sevenfold
industrial metal: disturbed
nu metal: korn and otep
hair metal:motley crue
thrash metal: black tide
black metal: dimmu borgir
thers countless amounts of metal bands i love, but those are my favs

Marilyn Manson, Slipknot, Mnemic, and Cradle of Filth are the kings. The best ones ever.

to many to add and im to tired but top 5
is 1)lamb of god
2)gwar
3)acdc
4)metallica
5)iron maiden

You are into old school metal, aren't you?

I love the way metal is so complex you could be into one band and not ather like I love old school but I perfer dark and gothic metal my fave goth metal band is HIM they roc

Metal and its sub-genres are one of the best types of music.

yeh I lv metal , I hate when people who don't give it a chance write it off as niose and sreaming it's so much more than that it's a pasion an unstopable force with anger but yet with a gripping melody and meaning I no It may not be for everyone but at least aknowalge It as a genre and is part of music.

Agree with lolxx, metal music is addictive.

Disturbed and they are not industrial.

Disturbed is not industrial, but they are still metal.

Megadeth
King Diamond
Manowar
Accept
Iron Maiden
White Zombie
Lordi

Metallica
Megadeth
Rob Zombie
All That Remains
Slipknot
Disturbed
tons of others. too many to list.