Here is my provisional favorite-metal-albums-of-all-time-list! Enjoy!
The first 10 albums are in pretty accurate order. However, after that, it becomes harder and harder to separate the albums clearly.

1.Cult Of Luna - Somewhere Along The Highway

2.Disillusion - Back To Times Of Splendor

3.Grand Alchemist - Intervening Coma-Celebration

4.Opeth - Blackwater Park

5.Dream Theater - Metropolis Pt. 2: Scenes From A Memory

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From last.fm (27.07.12)…

1.Dream Theater - Train Of Thought

2.Machine Head - Unto The Locust

3.Machine Head - The Blackening

4.Death - The Sound Of Perseverance

5.Machine Head - Through The Ashes Of Empires

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1.Deftones - Diamond Eyes

2.Coheed And Cambria - Year Of The Black Rainbow

3.Exodus - Exhibit B: The Human Condition

4.The Absence - Enemy Unbound

5.Wretched - Beyond The Gate

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Metal / Rock / Instrumental / Etc...

1.Fanisk - Noontide

2.Be'lakor - Stone's Reach

3.Amon Amarth - With Oden On Our Side

4.

5.Anathema - A Moment In Time

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1.Anathema - We're Here Because We're Here

2.Sigh - Scenes From Hell

3.Orphaned Land - The Never Ending Way Of ORwarriOR

4.Melechesh - The Epigenesis

5.Therion - Sitra Ahra

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1.Alcest - Écailles De Lune

2.Fear Factory - Mechanize

3.Les Discrets - Septembre Et Ses Dernières Pensées

4.Dark Tranquillity - We Are The Void

5.Eluveitie - Everything Remains as It Never Was

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1.Blind Guardian - At The Edge Of Time

2.Ancient Bards - The Alliance Of The Kings

3.Helloween - 7 Sinners

4.Fear Factory - Mechanize

5.Soulitude - Wonderfool World

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1.Nevermore - The Obsidian Conspiracy

2.Dark Tranquillity - We Are The Void

3.Fear Factory - Mechanize

4.Helloween - 7 Sinners

5.Blind Guardian - At The Edge Of Time

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1.Arsis - Starve For The Devil

2.Cynic - Re-Traced

3.Dark Tranquillity - We Are The Void

4.Dimmu Borgir - Abrahadabra

5.Fear Factory - Mechanize

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I haven't heard all the albums released in 2010, so this list could and probably will change in time.

1.Iron Maiden - The Final Frontier

2.Exodus - Exhibit B: The Human Condition

3.Death Angel - Relentless Retribution

4.Demonica - Demonstrous

5.Blind Guardian - At The Edge Of Time

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1.Sepultura - Beneath The Remains

2.Children Of Bodom - Follow The Reaper

3.Iron Maiden - The Book Of Souls

4.Iron Maiden - Powerslave

5.Iron Maiden - Brave New World

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This is my top 50 favorite albums. If I were to ever go on a really long road trip, I would take these 50 and blare them on the trip and extra loud while driving through a city .

1.Symphony X - The Odyssey

2.Symphony X - Paradise Lost

3.Judas Priest - Painkiller

4.Ayreon - The Human Equation

5.Symphony X - The Divine Wings Of Tragedy

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1.Swallow The Sun - New Moon

2.Avantasia - The Wicked Symphony

3.Epica - Design Your Universe

4.Avantasia - Angel Of Babylon

5.Be'lakor - Stone's Reach

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