Metal Masterpieces

Arcane Sun - Arcane Sun
Black Sabbath - Master of Reality
Neurosis - Times of Grace
Graveland - Following the Voice of Blood
 
testament-the new order
decapitated-nihility
children of bodom-follow the reaper
metallica-...and justice for all
carcass-heartwork
at the gates-slaughter of the soul
in flames-colony
cannibal corpse-bloodthirst
emperor-IX equilibrium
slayer-reign in blood
anthrax-the sound of white noise
exodus-bonded by blood
cryptopsy-none so vile
opeth-blackwater park
 
Arghoslent - Incorrigible Bigotry
The Chasm - Deathcult for Eternity: The Triumph
Suffocation - Pierced from Within
Demilich - Nesphite
Demigod - The Slumber of Sullen Eyes
Miasma - Changes
Necrophobic - The Nocturnal Silence
Graveland - Thousand Swords
Moonblood - Blut und Krieg
Nokturnal Mortum - Lunar Poetry
Mjolnir - Hinweg Uber die Tore der Zeit
Summoning - Let Mortal Heroes Sing Your Fame
 
Fear Of God - Within The Veil
Atrox - Terrestrials
Atrox - Orgasm
Madder Mortem - Deadlands
Nightwish - Oceanborn
Metallica - Ride The Lightning
Voivod - Killing Technology
Voivod - Dimension Hatröss
Voivod - Nothingface
Fates Warning - The Spectre Within
Fates Warning - Perfect Symmetry
Testament - The Legacy
Coroner - Punishment For Decadence
The 3rd And The Mortal - Tears Laid In Earth
Psychotic Waltz - A Social Grace
 
Queensrÿche - Rage for Order
Darkseed - Diving into Darkness (overlooked and essential to anyone who is a fan of goth metal, and isn't afraid of electronic stuff here and there)
WatchTower - Control and Resistance (best tech-metal album ever, guitar/vocal wise)
Blind Guardian - Nightfall in Middle Earth
Rhapsody - Power of the Dragonflame
Opeth - Morningrise
Lengsel - Solace (great progressive black metal)
Gordian Knot - s/t (the BEST instrumental album I've ever heard, hands down)
Crimson Glory - s/t (classic 80's American power metal)
Sacred Warrior - Rebellion (same as above!)
W.A.S.P. - The Crimson Idol
Running Wild - Pile of Skulls
maudlin of the Well - My Fruit Psychobells.. A Seed Combustible
Believer - Extraction From Mortality

those are the most 'classic' in my collection I can think of.. other albums may have some more classic songs, but these are classic and have NO filler at all.
 
Moraito - Morao y Oro
Morbid Angel - Blessed are the Sick
Beherit - Drawing Down the Moon
Andres Segovia - The Art of Segovia
Gordian Knot - Gordian Knot
 
Agalloch - The Mantle
Emperor - Anthems to the Welkin at Dusk
Lykathea Aflame - Elvenefris
My Dying Bride - The Angel and the Dark River
My Dying Bride - Turn loose the Swans
Opeth - My Arms, Your Hearse
The Chasm - Conjuration of the Spectral Empire
 
I think the term "masterpiece" is thrown around way too freely, but...

Emperor - Anthems to the Welkin at Dusk
Arcturus - La Masquerade Infernale and/or The Sham Mirrors
Ephel Duath - The Painter's Palette
Slayer - Reign in Blood
Bathory - Nordland I
Summoning - Let Mortal Heroes Sing Your Fame
 
Graveland - Thousand Swords
Beherit - Drawing Down the Moon
Darkthrone - Transilvanian Hunger
Burzum - Filosofem
Moonblood - Blut Und Krieg
Deathspell Omega - Si Monvmentvm Reqvires, Circvmspice
Blut Aus Nord - The Work Which Transforms God
Immortal - Pure Holocaust
Nokturnal Mortum - Goat Horns
Sacramentum - Far Away from the Sun
Bathory - The Return
Possessed - Seven Churches
Demigod - Slumber of Sullen Eyes
Demilich - Nespithe
Unanimated - Ancient God of Evil
Massacra - The Final Holocaust
Atheist - Unquestionable Presence
 
Basically to me classic means a cd that is outstanding from beginning to end with no weak moments:

Suffocation - Effigy of the Forgotten
Morbid Angel - Blessed Are the Sick
Immolation - Here In After
Atheist - Unquestionable Presence
Demelich - Nespithe
Arghoslent - Incorrigible Biggotry
Immortal - Battles In the North
Absu - Tara
Iron Maiden - Powerslave
Slayer - Reign in Blood
Cryptopsy - None So Vile
Lykathea Aflame - Elvenefris
 
The Chasm - Deathcult for Eternity: The Triumph
The Chasm - Conjuration of a Spectral Empire
Eucharist - A Velvet Creation
Amorphis - The Karelian Isthmus
Demilich - Nespithe
At the Gates - The Red in the Sky is Ours (and first half of WF...)
Atheist - Unquestionable Presence
Arghoslent - Incorrigible Bigotry
Demigod - Slumber of Sullen Eyes
Fleshcrawl - Descend into the Absurd
Graveland - Thousand Swords
Moonblood - Blut und Krieg
Burzum - Filosofem
Burzum - Hvis Lyset Tar Oss
Beherit - Drawing Down the Moon
Wolfnacht - Heidentum
The Shadow Order - Raise the Banners
Darkthrone - Under A Funeral Moon
Deathspell Omega - Si Monvmentvm Circvmspice (fuck, this is just hitting me properly)
Fullmoon - United Aryan Evil
Sacramentum - Far Away From The Sun
Summoning - Dol Guldur
 
Kreator - Pleasure To Kill
The greatest Thrash album ever, just pure Thrash and everything Thrash should be.

Iron Maiden - Number Of The Beadt

Metallica - Ride The Lightning
A distinct Thrash sound but also the distinctive Metallica sound

Darkthrone - Transilvanian Hunger
Example of what the Black Metal sound should be.
 
Lykathea Aflame - Elvenfris
Neurosis - Through Silver in Blood, A Sun That Never Sets
Black Sabbath - Paranoid, Masters of Reality, Vol.4
Pain of Salvation - Remedy Lane
Orodruin - Epicurean Mass
Reverend Bizarre - In The Rectory of The Bizarre Reverend
Warhorse - As Heaven Turns To Ash
Acid Bath - When The Kite String Pops, Pagan Terrorist Tactics
Arcane Sun - S/T
Estatic Fear - A Sombre Dance
Queensryche - Operation: Mindcrime
Isis - Oceanic
My Dying Bride - Turn Loose The Swans
Sleep - Dopesmoker
Solitude Aeternus - Into The Depths of Sorrow, Adagio
Necrophagist - Onset of Putrefication
Arcturus - La Masquerade Infernale
Negura Bunget - 'N Crugu Bradului

...and more, I quit. lol
 
Watain - Casus Luciferi
Watain - Rabid Death's Curse
Deathspell Omega - Si Monvmentvm Reqvires, Circvmspice
Ondskapt - Draco Sit Mihi Dux
Judas Iscariot - Distant in Solitary Night
Sargeist - Satanic Black Devotion
Azrael - Into Shadows Act 2
Mayhem - De Mysteriis Dom Sathanas
Burzum - Det Som Engang Var
Arghoslent - Incorrigible Bigotry
Grand Belial's Key - Mocking the Philanthropist
Setherial - Nord
Dawn - Slaughtersun
Dissection - The Somberlain
Naglfar - Diabolical
Agmen - Damnation
Taake - ...Bjørgvin...
Drudkh - Autumn Aurora
Insision - Beneath the Folds of Flesh
Ulver - Bergtatt
Opeth - Still Life
Agalloch - The Mantle
Empyrium - Songs of Moors & Misty Fields
Moonsorrow - Kivenkantaja
Vintersorg - Ödemarkens Son
Carcass - Heartwork
Arsis - A Celebration of Guilt
Amon Amarth - Once Sent From the Golden Hall
Emperor - In the Nightside Eclipse
Bathory - Hammerheart
Nokturnal Mortum - Goat Horns
Dimmu Borgir - Stormblåst
Weltmacht - And to Every Beast its Prey
Nargaroth - Herbstleyd
Graveland - Thousand Swords

There's probably more...
 
Death - The Sound Of Perseverance
Control Denied - The Fragile Art of Existence
Spiral Architect - A Sceptic's Universe
Psychotic Waltz - A Social Grace
Nevermore - Dead Heart In A Dead World
Opeth - Deliverance / Damnation
Dream Theater - Scenes From A Memory
Demons & Wizards - s/t
Dimmu Borgir - Death Cult Armaggedon
Emperor - Prometheus: The Discipline of Fire And Demise
Iron Maiden - Brave New World
Bruce Dickinson - The Chemical Wedding
Adagio - Underworld
Metallica - Ride The Lightning, Master of Puppets, And Justice For All
King Diamond - Abigail
 
Cryptopsy - the Cold Hate, Warm Blood track

I have yet to find a metal album that is flawless, that does not annoy me or bore me at some point.
 
Agalloch- The Mantle
Burzum- Hvis Lyset Tar Oss
Burzum- Filosofem
Dissection- Storm of the Lights Bane
Emperor- In the Nightside Elcipse
Emperor- Anthems to the Welkin at Dusk
My Dying Bride- Angel and the Dark River
Nargaroth- Herbstleyd
Neurosis- Through Silver in Blood
Neurosis- A Sun That Never Sets
Opeth- Orchid
Opeth- Morningrise
Opeth- My Arms Your Hearse
Opeth- Still Life