Impossible to make a top 10 like this, i'll try it by decades:
60's
The Beatles - White Album
Pink Floyd - The Piper At the Gates of Dawn
King Crimson - In The Court of the Crimson King
The Moody Blues - Days of Future Passed
Procol Harum - Self-titled
The Zombies - Odessey & Oracle
The Beatles - Revolver
Deep Purple - Self-titled
The Jimi Hendrix Experience - Are you experienced?
The Nice - The Thoughts of Emerlist Davjack
70's
Pink Floyd - Atom Heart Mother
Genesis - Selling England by The Pound
Emerson, Lake & Palmer - Brain Salad Surgery
Grand Funk Railroad - Phoenix
Santana - Abraxas
King Crimson - Larks Tongue In Aspic
Deep Purple - Burn
Frank Zappa - One Size Fits it All
Yes - Close To The Edge
Black Sabbath - Sabbath Bloody Sabbath
80's
The Smiths - Meat is Murder
Echo & The Bunnymen - Ocean Rain
Sonic Youth - Evol
Bauhaus - In That Flat Field
Rush - Moving Pictures
Joy Division - Closer
The Cure - The Head on the Door
Nirvana - Bleach
Pixies - Surfer Rosa
Talking Heads - Remain in Light
90's
Radiohead - Ok Computer
Alice In Chains - Dirt
Levitation - Need For Not
Soundgarden - Badmotorfinger
Blur - Parklife
Kula Shaker - K
Sonic Youth - Goo
Depeche Mode - Violator
Queens of the Stone Age - Rated R
Portishead - Dummy
2000's
Porcupine Tree - In Absentia
Tool - Lateralus
Deftones - White Pony
Radiohead - Kid A
Opeth - Blackwater Park
Muse - Absolution
Silverchair - Diorama
The Cooper Temple Clause - See This Through and Leave
Anathema - A Fine Day To Exit
Sigur Ros - ()
2010's
Like i care...
So many artists/albums were left out since i just added whatever came to my mind first. Oh, and this is basically focused on ROCK, i left out most of the other genres or Miles Davis, Return To Forever, Jimmy Smith, Funkadelic, M. Jackson, Prince, Tom Jobim and so many others would have made it.