This great documentary program is called "Ein Leben als Extravaganza - Das Genie Frank Zappa".
Written & Directed by Rudi Dolezal & Hannes Rossacher (DoRo, 1993).
The program was broadcast in ZDF, Germany (ZDF = Second German Television).
Please note that it's narrated into germen, but it's really doesn't spoil the enjoyment of this program (it is told by none germen speaker).
For any incorrect information, please notify me.