What's your favorite album cover art ?

These covers describe perfectly the contend 

Alphataurus, 1973 triple fold out
Yessongs, 1973 4-piece fold out cover by Roger Dean
Demons and Wizards & The Magician´s Birthday, both 1972 by Roger    Dean are his finest
Tales from Topographic Oceans, 1973 his 4th best
Relayer, 1974 his worst, grey and dull like music it contains except wonderful "Soon" section
Greenslade, both 1973 also by Roger Dean
Look at Yourself by Uriah Heep, 1971
Very ´eavy.... Very ´umble by Uriah Heep, 1970
Deep Purple in Rock, 1970
Trespass by Genesis, 1970 
Benefit by Jethro Tull, 1971
Aqualung by Jethro Tull, 1971
Valentyne Suite by Colosseum, 1969 the 1st on Vertigo Label
Colosseum Live, 1971
Pictures at an Exhibition & Tarkus by ELP, 1971
Pink Floyd´s Hipgnosis covers, all great
Tormato by Yes, 1978 Hipgnosis´ most clever cover
Twin Peaks Mountain Live, 1974
Harakka Bialoipokku by Pekka Pohjola, 1974
Uomo di pezza by Le Orme, 1972
Blue Öyster Cult, 1972 -75
The Sensational Alex Harvey Band´s cartoon covers, 1974-75
Boston covers, 1976-86 
Point of Know Return by Kansas, 1977 their finest album
Infinity by Journey, 1978 their best album
Obsession by UFO, 1978 their best album 
Asia, 1982-83 by Roger Dean at his best (again)

...
Santana: first 4 covers, 1969-72
The Moody Blues: To Our Children´s Children´s Children, 1969
Banco del Mutuo Soccorso: all 70´s covers
De De Lind: Io non so da dove vengo è non so dove mai andro... 1972
Humble Pie: Smokin´, 1972
West, Bruce & Laing: Why Dontcha, 1972
Mauro Pelosi: La stagione per morire, 1972
Metamorfosi: Inferno, 1972
Quella Vecchia Locanda: both albums 1972-74
Area: all 70´s covers
New Trolls Atomic System, 1973
Murple: Io sono murple, 1974
Il Volo: both albums 1974-75
Hurriganes: Roadrunner, 1974
Camel: Mirage and Snow Goose, 1974-75
Procession: Frontiera, 1972
Gravy Train: Staircase to the Day, 1974
Be-Bop Deluxe: Futurama, Sunburst Finish & Modern Music, 1974-76
Mahogany Rush IV, 1976
Rick Wakeman: King Arthur and the Knights of the Round Table, 1975
Paolo Tofani: Electric Frankenstein, 1975
Celeste, 1976
Return to Forever: Romantic Warrior, 1976
Blue Öyster Cult: Agents of Fortune, 1976
Journey: Captured, 1981
...   

...
Caravan: In the Land of Grey and Pink, 1971
Caravan: For Girls Who Grow Plump in the Night, 1973
Renaissance: Scheherazade and Other Stories, 1975
Rush: Fly by Night, 1975
Rush: Farewell to Kings, 1977
Kansas: Monolith, 1979
Blue Öyster Cult: Cultösaurus Erectus, 1980
Journey: Escape, 1981
Michael Schenker Group, 1981
...