Ooh, I love progrock, though I'm never quite sure what qualifies and what doesn't (someone mentioned Hawkwind; I wouldn't have thought of them, but I do very much love them). A lot of nice tracks here; especially appreciated King Crimson, because I've never really listened to much of them and that track was great. Some tracks l like from bands I haven't seen mentioned:
I mentioned Mogwai earlier in the thread, I know they come a lot later and blend more into post-rock and shoegaze sometime. But I just saw these two fabulous videos and they capture the pompous, mindfucky grandiosity of prog rock so well. Both are incredibly well-done and visually interesting, and yet blur the line so perfectly between profundity and self-parody.