No particular order:
David Bowie: Hunky Dory
David Bowie: Station to Station
David Bowie: The Rise and Fall of Ziggy Stardust and the Spiders from Mars
David Bowie: Lets Dance
Pearl Jam: Vs
Pearl Jam: Yield
Beatles: Sgt. Pepper's Lonely Hearts Club Band
Beatles: White Album
Elton John: Greatest Hits
Pearl Jam: Vitalogy
If Greatest Hits don't count, I'd have a difficult time choosing between Harvest by Neil Young, Plastic Ono Band by John Lennon or Highway 61 Revisited by Bob Dylan.