Led Zeppelin: I, II, IV, Houses of the Holy, Physical Graffiti
Jimi Hendrix: The Jimi Hendrix Experience, Electric Ladyland, Axis: Bold as Love
Rage Against the Machine: Rage Against the Machine, Evil Empire, Renegades, Live at the Grand Olympic Auditorium
The Doors: The Doors, LA Woman
Jefferson Airplane: Surrealistic Pillow
Pink Floyd: The Dark Side of the Moon, Wish you Were Here
Eric Clapton: Slowhand, 461 Ocean Boulevard
Frank Zappa: Apostrophe, Sheikh Yerbouti, The Best Band You Never Heard in Your Life
Radiohead: OK Computer
The Who: Tommy, Live at Leeds
Audioslave: Audioslave
Bob Dylan: Highway 61 Revisited, Blonde on Blonde, Blood on the Tracks
Tool: 10 000 Days, Lateralus, Aenima
Black Sabbath: Paranoid
Wolfmother: Wolfmother
Bob Marley and the Wailers: Burnin
Carlos Santana: Abraxas
Kent: Isola, Vapen & Ammunition
The Kooks: Inside In/Inside Out
Oasis: What's the Story Morning Glory, Definetly Maybe
From the top of my head
These are a must in your collection.