Tangerine Dream - “Bathtub Session,” filmed 1969 in the ruins at Potsdamer Platz. Very artsy period piece, good quality, the visuals are nice.
http://www.youtube.com/watch?v=BNQaaorgy4U
I’ll see your Tangerine Dream and raise you with early Kraftwerk
Kraftwerk - Ruckzuck
http://www.youtube.com/watch?v=JbK1GulvSDQ