Your favorite prog rock music? ?

Old favorites:
ELP - Brain Salad Surgery and Trilogy
Genesis - Selling England by the Pound
Rush - Hemispheres

New favorites:
Porcupine Tree - In Absentia and Lightbulb Sun
Dream Theater - Images and Words
Tool - Lateralus

Many others, but these come quickly to mind...

Ambrosia's first.
King Crimson. "In The Court Of The Crimson King".
Tangerine Dream. Anything from the 70"s and 80's, but the best is "LOGOS Live"!
Nektar's "A Tab In The Ocean" and "Remember The Future".
Synergy. "Electronic Realizations For Rock Orchestra"
I'm showing my age with these picks.

In the Court of the Crimson King
Close to the Edge
In Search of the Lost Chord
Tarkus
Foxtrot
"L"
Lark's Tongue in Aspic
Starless and Bible Black
Gentle Giant
The Aerosol Grey Machine
OK Computer
Kid A

and on and on and on

Canderbury Scene!!!

National Health
Hatfield & The North
Gong
Soft Machine
Caravan
Khan
Supersister

Clever synthesis of jazz improvisation and rock rhythms!!!!!1111