[Video no longer available]
Frank Zappa as the mystery guest on What’s My Line. Pretty dry, to be honest, although some might find interest in hearing him go into surprising detail about the video-to-film process used in filming 200 Motels (it was shot and edited in PAL video then upconverted to 35mm, a novel process at the time).
So why do I post this? Because at the 2:50 mark he references the awesome Time Life photo of him and his parents, confessing that it was “too purple.”