Your Top 15 All Time Metal Albums

In order:

1. Black Sabbath - Black Sabbath
2. The Morningside - The Wind, the Trees and the Shadows of the Past
3. Entombed - Left Hand Path
4. Black Sabbath - Master of Reality
5. Burzum - Filosofem
6. Black Sabbath - Vol. 4
7. Metallica - Kill 'em All
8. Slayer - Seasons in the Abyss
9. Napalm Death - Harmony Corruption
10. Ulver - Nattens Madrigal
11. Anaal Nathrakh - Hell is Empty, and All the Devils are Here
12. Electric Wizard - Dopethrone
13. Slayer - Show No Mercy
14. Darkthrone - A Blaze in the Northern Sky
15. Black Sabbath - Heaven and Hell
16. Metallica - Ride the Lightning
17. Agalloch - The Mantle
18. Immortal - Diabolical Fullmoon Mysticism
19. Cannibal Corpse - Tomb of the Mutilated
20. Cannibal Corpse - The Bleeding

Moving Crosscurrents of Time is better than The Wind..., imo. Snappier songwriting, better melodies, and epic soloes. Pretty overlooked band, wouldn't add them to my favorites list though.
 
Almost all heavy metal and black metal:

Black Sabbath- Paranoid
Black Sabbath- Mob Rules
Judas Priest- Sad Wings of Destiny
Judas Priest- Painkiller
Iron Maiden- Number of the Beast
Iron Maiden- 7th Son of a 7th Son
Dio- Holy Diver
Agalloch- The Mantle
Burzum- Hvis Lyset Tar Oss
Burzum- Filosofem
Deathspell Omega- Paracletus
Emperor- Anthems to the Welkin at Dusk
Darkthrone- Transylvanian Hunger
Mutiilation- Remains of a Ruined Cursed and Dead Soul
Neurosis- Through Silver in Blood
Opeth- Morningrise
 
1: Tomb of The Mutilated - Cannibal Corpse
2: True Carnage - Six Feet Under
3: Agony - Fleshgod Apocalypse
4: The World is Ours - Upon a Burning Body
5: A New Era of Coruption - Whitechapel
6: Hell Chose Me - Carnifex
7: The Great Stone War - Winds of Plague
8: Neverbloom - Make Them Suffer
9: obZen - Meshugga
10: Genisis - Job For A Cowboy
11: Sacrament - Lamb of God
12: Soundtrack To Your Escape - In Flames
13: In The Absence Of... - Abigail Williams
14: Pray For Villans - DevilDriver
15: There Will Be Violence - Impending Doom
 
In no particular order, I just divided it up to make it easier to read. I'm also into new stuff, which this list does not reflect, but if my CD's were stolen and my hard drives died, these are the first ones I'd have to reacquire.

Death - Human
Disincarnate - Dreams of the Carrion Kind
Cynic - Focus
Meshuggah - Nothing
Suffocation - Pierced from Within

Gorguts - Obscura
Slayer - Reign in Blood
Pestilence - Spheres
Deicide - Legion
Atheist - Unquestionable Presence

Morbid Angel - Domination
Cannibal Corpse - Tomb of the Mutilated
Carcass - Necroticism
Megadeth - Rust in Peace
Celtic Frost - Morbid Tales
 
In no specific order:

1 - Metallica - Master of Puppets
2 - Iron Maiden - Powerslave
3 - Morbid Angel - Covenant
4 - Candlemass - Nightfall
5 - Slayer - Reign in Blood
6 - Death - Leprosy
7 - Dissection - Storm of the Light's Bane
8 - Darkthrone - A Blaze in the Northern Sky
9 - Black Sabbath - Paranoid
10 - Enslaved - Below the Lights
11 - Sepultura - Arise
12 - Runemagick - The Supreme Force of Eternity
13 - Taake - Nattestid Ser Porten Vid
14 - Mercyful Fate - Melissa
15 - Dio - Holy Diver