Doc - Kraftwerk (1981)
Killer 1981 German TV doc on KRAFTWERK! (There are German parts with no subs, but don't worry about it too much if you don't speak German-- it's mostly music!)
Collection - Laurie Spiegel (early synthesizer genius)
Amazing footage of unsung hero of the early synthesizer music: Laurie Spiegel
Collection - Delia Derbyshire
Electronic music pioneer Delia Derbyshire deserves your undivided attention. VERY recommended.