Your favorite prog rock music? ?

In addition to many listed:
Camel - all of their stuff
Illusion - " " (Illusion is the original Rennaisance so you should also check out the first 2 Rennaisance albums before Annie Haslam and co)

That's the 70's stuff, some more current acts include:

Gordian Knot
Chroma Key
OSI
Blackfield

I didn't see the following yet:

Mike Oldfield - can't have a list w/o him. All of his are worth having.
Robert Wyatt - we have Soft Machine and Matching Mole, but his solo stuff beats both, and the recordings are more "audiophile quality" - Super_agent_86 mentioned his solo works but it deserves emphasis.

Also more current -
Mostly Autumn - for fans of Rennaisance and Illusion - also a little bit of Pink Floyd in there
Bjorn Lynn - heavy Synth work

I think All Music Guide has a good summary of what's in which genre. If you take a look at the sub-genre's of Rock that the AMG publishes AMG Rock Genres , there's one category - Art-Rock/Experimental, which includes the following sub genres:

* Prog-Rock/Art Rock
* Kraut Rock
* Noise-Rock
* Neo-Prog
* Experimental Rock
* Canterbury Scene
* Avant-Prog

AMG goes on to define each, and they give some interesting history.

another of my favorites that is missing is Man. Their best is "Be good to yourself at least once a day"

Xiekitchen/Dan_ed - I'm with you on Novella, but I like "Song for All Seasons" just as much, and I prefer the music on "Scheherazade" a little more than both, but the pressings (I have 2) on it aren't as good (actually the Scherazade pressings are poor).

Also, I have Jade Warriors "Kites" but prefer "Waves" and "Floating Worlds" which have superior dynamics IMO, and I just prefer the music. The latter 2 are good audiofile quality pressings.

Finally, have either of you tried Illusion - "Out of the Mist"? Jane Relf isn't Annie Haslam, but on the other hand, Annie Haslam isn't Jane Relf. Jane is one of my favorite vocalist, sadly it's hard to find much by her except for the Illusion work, and "Moonstone".

if you're ok with ebay -
This ("Out of the Mist") is probably the best album from that group:
Out Of the Mist

Here's a copy of the very first Renaissance album:
Renaissance

If you want to get the first two (Original Line-up) Renaissance releases on 1 CD plus some bonus tracks, there's this:
Renaisance Innocents and Illusion

The vinyl of "Out of the Mist isn't bad, but the original Renaissance albums pressings leave a lot to be desirred, so CD may be preferred.

The other great thing about this group is John Hawken (ie the KB player from Strawbs) is a big part of it.