Absu - (bloodredchaos)
Alcest - (lak89, Maddolis)
Alestorm - (Maddolis)
Alice in Chains - (Shuure)
Amon Amarth - (Jeff Schu, Maddolis)
Anaal Nakthrakh - (Floyo Mounier)
Anathema - (Shuure)
Annihilator - (Shuure)
Arch Enemy - (bloodredchaos, Jeff Schu, Shuure)
Arcturus - (Maddolis)
Arkona - (Maddolis)
Atheist - (bloodredchaos)
Atlas Moth - (invertt)
At the Gates - (Shuure)
Autopsy - (bloodredchaos)

Be'lakor - (Maddolis)
Behemoth - (Joe C)
Between the Buried and Me - (Floyo Mounier, Jeff Schu)
Black Label Society - (Jeff Schu, Kevin II, Sherick, Shuure)
Black Majesty - (Maddolis)
Black Sabbath - (Jeff Schu, Kevin II, Sherick)
Blind Guardian - (Kevin II, metalmaiden, Sherick)
Bolt Thrower - (bloodredchaos)
Bullet for My Valentine - (Shuure)

Candlemass - (bloodredchaos)
Cannibal Corpse - (bloodredchaos, lak89)
Carcass - (bloodredchaos, Damage Inc.)
Circus Maximus - (Shuure)
Children of Bodom - (bloodredchaos, Jeff Schu, Kevin II, Nesquick, Shuure)
Chimaira - (Jeff Schu)
Converge - (bloodredchaos, Floyo Mounier, Shuure)
Crimson Glory - (Maddolis)

Dark Funeral - (lak89, Maddolis)
Death Angel - (Damage Inc.)
Deep Purple - (bloodredchaos, invertt)
Deicide - (Damage Inc.)
Destruction - (lak89)
Devin Townsend - (Maddolis, Shuure)
Dimmu Borgir - (Kevin II, Maddolis, Shuure)
Disturbed - (Shuure)
Down - (Sherick, Shuure)
Dragonforce - (Kevin II)
Dream Theater - (Damage Inc., Jeff Schu, lak89, Maddolis, metalmaiden, Sherick, Shuure)
D.R.I - (bloodredchaos)
Dying Fetus - (lak89)
Dyscarnate - (lak89)

Emperor - (Shuure)
Ensiferum - (Maddolis)
Enslaved - (bloodredchaos, Damage Inc.)
Entomed - (Floyo Mounier)
Epica - (Kevin II, lak89)
Evergrey - (Shuure)
Every Time I Die - (Joe C)
Exodus - (Damage Inc.)

Fen - (Floyo Mounier)
Forbidden - (Damage Inc.)

Gamma Ray - (Maddolis)
Goatwhore - (Maddolis)
Gojira - (invertt, Kevin II, Shuure)
Gorguts - (Maddolis)
Gorod - (lak89)
Gwar - (Jeff Schu)

Hatebreed - (Jeff Schu)
Heathen - (Damage Inc.)
Heaven and Hell - (bloodredchaos, Damage Inc., invertt)
Hell Yeah - (invertt)
Helloween - (Shuure)
High On Fire - (Jeff Schu, Nesquick)
Hirax - (Damage Inc.)
Hour of Penance - (lak89)

Iced Earth - (Damage Inc., lak89, Maddolis)
Ihsahn - (Shuure)
Immolation - (bloodredchaos)
Immortal - (bloodredchaos, Damage Inc., Maddolis, Shuure)
Impiety - (Maddolis)
Incantation - (bloodredchaos)
In Flames - (bloodredchaos, Jeff Schu, Kevin II, Nesquick, Shuure)
Insomnium - (Maddolis)
Into Eternity - (Sherick)
Iron Maiden - (bloodredchaos, Damage Inc., Jeff Schu, Kevin II, metalmaiden, Nesquick, Sherick, Shuure)

Job for a Cowboy - (Jeff Schu, Nesquick, Shuure)
John Petrucci - (Kevin II)
Judas Priest - (Damage Inc., invertt, Kevin II, lak89, Shuure)
Jørn Lande - (Shuure)

Kamelot - (Damage Inc., Kevin II, Maddolis, Shuure)
Keep of Kalessin - (Shuure)
Killswitch Engage - (Jeff Schu, Joe C, Shuure)
Koldbrann - (Shuure)
Korn - (Shuure)
Kreator - (Damage Inc.)

Lamb of God - (Jeff Schu, lak89, Nesquick, Shuure)
Liquid Tension Experiment - (Jeff Schu)
Lock Up - (lak89)
Loudness - (lak89)

Machine Head - (bloodredchaos, Shuure)
Manowar - (bloodredchaos)
Marilyn Manson - (Damage Inc., invertt)
Mastodon - (bloodredchaos, Floyo Mounier, Jeff Schu)
Mayhem - (bloodredchaos)
Megadeth - (bloodredchaos, Damage Inc., invertt, Jeff Schu, lak89, Nesquick)
Melechesh - (Floyo Mounier)
Meshuggah - (Shuure)
Metallica - (Damage Inc., Jeff Schu, lak89, Nesquick, Sherick, Shuure)
Moonsorrow - (Maddolis)
Motörhead - (bloodredchaos, Damage Inc., Shuure)
Mudvayne - (Jeff Schu, Sherick)
My Dying Bride - (Shuure)

Napalm Death - (Maddolis, Shuure)
Negura Bunget - (Floyo Mounier, Maddolis)
Neurosis - (Floyo Mounier)
Nevermore - (Jeff Schu)
Nightwish - (Sherick)
Nile - (Floyo Mounier, Shuure)

Obituary - (lak89)
Opeth - (bloodredchaos, Damage Inc., Jeff Schu, Maddolis, Shuure)
Overkill - (bloodredchaos)
Ozzy Osbourne - (Jeff Schu, Shuure)

Pagan's Mind - (Shuure)
Pain of Salvation - (lak89, Maddolis, Shuure)
Paul Gilbert - (Kevin II, Shuure)
Pentagram - (bloodredchaos)
Porcupine Tree - (Jeff Schu, Shuure)
Possessed - (bloodredchaos, Damage Inc.)
Primordial - (Maddolis)
Primus - (Jeff Schu)
Psycroptic - (Maddolis)
Putrid Pile - (lak89)

Queensryche - (invertt, Jeff Schu, lak89, Maddolis)

Rammstein - (Shuure)
Redemption - (Sherick)
Rob Zombie - (Jeff Schu, Sherick)

Samael - (Maddolis)
Saliva - (Sherick)
Scorpions - (bloodredchaos, Nesquick)
Sebastian Bach - (metalmaiden)
Sepultura - (bloodredchaos, Floyo Mounier)
Shadows Fall - (Jeff Schu, Sherick)
Shining - (Floyo Mounier)
Slayer - (bloodredchaos, Damage Inc., invertt, Jeff Schu, Joe C, Kevin II, Shuure)
Slipknot - (Jeff Schu)
Sodom - (Floyo Mounier)
Sonata Arctica - (Maddolis)
Steel Panther - (Shuure)
Stratovarius - (Kevin II)
Suffocation - (Damage Inc.)
Susperia - (Shuure)
Swallow the Sun - (Maddolis)
Symphony X - (Damage Inc., Jeff Schu, Kevin II, lak89, metalmaiden)
System of a Down - (Jeff Schu, Shuure)

Testament - (bloodredchaos, Damage Inc., Jeff Schu, lak89, Maddolis)
The Amenta - (lak89)
The Dillinger Escape Plan - (Floyo Mounier, Joe C, Shuure)
The Sword - (Kevin II, Nesquick, Sherick)
Tool - (invertt, Jeff Schu)

Ulver - (Floyo Mounier, Shuure)
Unearth - (lak89)

Vanishing Point - (Maddolis)
Vital Remains - (Damage Inc.)
Voivod - (bloodredchaos)
Volbeat - (invertt, Sherick)
Voyager - (lak89)

Whitechapel - (Joe C)
Whitesnake - (Damage Inc.)

Yngwie Malmsteen - (Kevin II)

Zyklon - (Shuure)

There wasn't exactly a whole lot of response to the idea, but I'm relatively bored, so thought I'd do it regardless.

The bands I've listed as of now are the ones I've seen live. This isn't limited to bands I've gone to specific concerts to see (Anathema warmed up for Porcupine Tree, Job for a Cowboy warmed up for Lamb of God, to give examples), but I've only included artists where I've seen the whole gig, so just passing by them playing on a festival wouldn't count. I've also excluded non metal artists and artists who aren't particularly recognized, with some of the ones included perhaps being questionable.

I have hardly seen any bands live, let alone metal

Megadeth, High on Fire, Job For a Cowboy, In Flames, Children of Bodom, Metallica, The Sword, Lamb of God, Scorpions and Iron Maiden.

What are these, international-sized bands?

Queensryche
Ensiferum
Sonata Arctica
Vanishing Point
Black Majesty
Psycroptic
Dream Theater
Pain of Salvation
Devin Townsend
Be'lakor

Not really heard of Black Majesty or Be'lakor, but I'll add them at least the time being. Reason why we would exclude som of the more obscure stuff is to avoid the list being flooded.

Another thing that could be nice is if this thread was used to discuss which live shows you enjoyed and which ones you look forward to see and whatnot.

Sticking to the more well known acts, though I may not be a very good judge of what counts as "well known" -

Intentionally: Deep Purple, Scorpions, Motörhead, Iron Maiden, Heaven and Hell, Cannibal Corpse, Atheist, Bolt Thrower, Mayhem, Testament, Overkill, Slayer, Autopsy, Manowar, Carcass, Enslaved, Voivod, Possessed, D.R.I., Pentagram, Incantation, Candlemass, Megadeth, Immortal, Immolation, Absu

Unintentionally: Opeth, Arch Enemy, In Flames, Converge, Machine Head, Children of Bodom, Mastodon

Blind Guardian
Nightwish
Volbeat
Iron Maiden
Dream Theater
Into Eternity
Redemption
Black Sabbath
Rob Zombie
Black Label Society
Metallica
Down
The Sword
Saliva
Shadows Fall
Mudvayne

Ah yeah I've also seen Alestorm.

Now this is a ridiculous topic. But I'll bite anyway

Iron Maiden
Judas Priest
Dimmu Borgir
Black Sabbath (ozzy and Dio lineups)
Slayer
Megadeth
Anthrax
High On Fire
Immortal
Absu
Dio
Ozzy
Pantera
Overkill

I've never seen Pain of Salvation...

You can add Sepultura as well.

add me up for:

Anaal Nathrakh
The Dillinger Escape Plan
Entombed
Fen
Melechesh
Negura Bunget
Nile
Sepultura
Shining
Sodom
Ulver

pretty sure I missed a bunch but whatevs

Whew, Gonna have to think a bit here:

Metallica (2 times)
Megadeth (3 times Gigantour 2005, 2006, 2008)
Opeth (4 times)
Dream Theater (11 times)
Slayer
Porcupine Tree (4 times)
Symphony X (Gigantour
Between the Buried and Me
Mastodon
Mudvayne (Ozzfest 2005)
Iron Maiden (Ozzfest 2005)
Black Sabbath (Ozzfest 2005)
Rob Zombie (Ozzfest 2005)
Queensryche
Killswitch Engage (Ozzfest 2005)
Tool
Testament
GWAR
Chimaira
Amon Amarth
Job For A Cowboy
Slipknot
Lamb of God
Primus
Shadows Fall
Liquid Tension Experiment
Children of Bodom
High on Fire
In Flames
Arch Enemy
Nevermore
Hatebreed
System of a Down
Ozzy Osbourne
Black Label Society

-------

I know there are a bunch of others but I just can't think of em' atm/lazy lol. A good chunk of em' are because of festival/package tour type shows as well.

Rather limited metal concerts, but here goes:

Slayer
Marilyn Manson
Megadeth
Judas Priest
Evanescence
Heaven and Hell
Hell Yeah
Tool
Deep Purple (1973) with Gillan, Lord, Paice, Blackmore and Glover
Queensryche

Subject to edit as I think of more.
EDIT 2/15/12:
Volbeat,
Motorhead
Since this thread seems to be dormant in terms of updating lists, I'll just keep editing this post.
Edit 1/14/13:
Atlas Moth
Devin Townsend
Gojira

Seems like you've all seen a fairly varied selection of bands. I'll update the list at the end of the weekend.

Wouldn't mind seeing some more talk about the bands you've seen though. I for one can't understand how you've gone to 11 DT concerts, Jeff! I like them a lot and all, but I think I would've grown weary of them. Apart from my brothers band, the most times I've seen a band would be four which is the times I've seen Circus Maximus, Pagan's Mind and Susperia.

Things that bother me is that I won't be able to see Nevermore anymore, and I really wish Symphony X would travel to Scandinavia more so I could catch them. I've also been slacking when it comes to Megadeth, who are here pretty often, so I still haven't caught them either. I also was at a festival where Tool played (same place I saw Opeth for the first time), but I saw kinda stuck up on how much I disliked their fanbase, and I hadn't really caught on to them, so I just sat and drank beer instead. In hindsight, I really regret that now.