One and half hours of pure gold: Prog Rock Britannia BBC4 An Observation in Three Movements! One of the best, and also one of the most hilarious, documentaries ever! I think it starts with some sort of Tarkus accapella. All the greatest stuff is on that documentary. Even some previously unseen footage.
One of the best parts is definetly Carl Palmer's stainless steel drumset. "First time we needed three men to lift the bassdrum". Now that's progressive! Hoho.
Check it out even if you don't dig; or even don't know; 70's and late 60's progressive rock. I used to be a psytrance man but then I got the disesase called prog fandom and it's great!
Part 1
Part 2
Part 3