Um.. hard.. guess I have to random pick some..
Opeth
Yes
King Crimson
Mars Volta
Kyuss
Hawkwind
Hidria Spacefolk
The Doors
ISIS
Camel
Black Sabbath
Dungen
Mastodon
Metallica (the early ones of course but still,, those albums are so awesome I have to have em here)
Led Zeppelin
I feel like I need a top 100.. I love so many others..