Mine are,

1 Machine Head by Deep Purple
2 Led Zepplin III by Led Zepplin
3 Cosmo's Factory by Creedence Clearwater Revival
4 Every Good Boy Deserves Favor by The Moody Blues
5 Powerage by AC/DC

They're also the albums I've worn out in the most formats, album, 8-track, cassette and cd.

Happy? -Jan Arden
Spy Boy -Emmy Lou Harris
Brothers in Arms -Dire Straits
The Mask and the Mirror - Loreena Mc Kennit
Baptism - Joan Baez
and cheating here..........
Blonde on Blonde -Bob Dylan

Blue by Joni Mitchell
Dark Side of the Moon by Pink Floyd
The White Album by The Beatles
Blue Clear Sky by George Strait
Jesus Christ Superstar

From LP's to 8 tracks to cassettes, and CD's, I've had & still have several copies of all of them.

Led Zeppelin - Led Zeppelin IV
Pink Floyd - Dark Side of the Moon
Journey - Infinity
KISS - Alive
Yes - The Yes Album

* Journey's Greatest Hits CD

* 17 by Chicago

* I'll Lead You Home (I think that's the name...) by Michael W. Smith

* Beautiful Letdown by Switchfoot

* Paul Simon's Greatest Hits CD