I've watched these two EDM documentaries, I think you should check them out:
1) House - goes through the genre that, with techno, fathered trance
Pump up the Volume Vol.1
(look at the top for parts 2 and 3)
2) Trance - tours through the early trance scene in Berlin
Berliner Trance - Paul van Dyk german techno music love parade laurent garnier
Know any other good documentaries on EDM?