Here's the top 25 rock albums of all time, according to rock music historian Piero Scaruffi. Don't know if any of you will appreciate this, but if you like the more experimental side of rock music, this thing is filled with interesting records you might not hear of otherwise. It doesn't really reflect bias towards any particular genre, either. There's punk, hardcore, art-rock, folk-rock, krautrock, pop, gothic, progressive rock and much more here. Give it a look-see 
1. Captain Beefheart and His Magic Band- Trout Mask Replica
2. The Velvet Underground- The Velvet Underground and Nico
3. Robert Wyatt- Rock Bottom
4. Faust- Faust
5. The Doors- The Doors
6. Popol Vuh- Hosianna Mantra
7. Pere Ubu- The Modern Dance
8. Royal Trux- Twin Infinitives
9. John Fahey- Fare Forward Voyagers
10. Nico- Desert Shore
11. Tim Buckley- Lorca
12. The Red Crayola- Parable of Arable Land
13. Klaus Schulze- Irrlicht
14. Nick Cave- The Good Son
15. Lisa Germano- Geek the Girl
16. Morphine- Good
17. Bob Dylan- Blonde on Blonde
18. Neu!- Neu!
19. Foetus- Nail
20. Suicide- Suicide [First Album]
21. Van Morrison- Astral Weeks
22. The Residents- Not Available
23. Pop Group- Y
24. Vampire Rodents- Lullaby Land
25. Husker Du- Zen Arcade
(source)
1. Captain Beefheart and His Magic Band- Trout Mask Replica
2. The Velvet Underground- The Velvet Underground and Nico
3. Robert Wyatt- Rock Bottom
4. Faust- Faust
5. The Doors- The Doors
6. Popol Vuh- Hosianna Mantra
7. Pere Ubu- The Modern Dance
8. Royal Trux- Twin Infinitives
9. John Fahey- Fare Forward Voyagers
10. Nico- Desert Shore
11. Tim Buckley- Lorca
12. The Red Crayola- Parable of Arable Land
13. Klaus Schulze- Irrlicht
14. Nick Cave- The Good Son
15. Lisa Germano- Geek the Girl
16. Morphine- Good
17. Bob Dylan- Blonde on Blonde
18. Neu!- Neu!
19. Foetus- Nail
20. Suicide- Suicide [First Album]
21. Van Morrison- Astral Weeks
22. The Residents- Not Available
23. Pop Group- Y
24. Vampire Rodents- Lullaby Land
25. Husker Du- Zen Arcade
(source)