Agreed about the documentary. It is very interesting to see where it all started, but all documentaries I've seen always just focus on the very beginnings, not what came after. It would be great to see a documentary focus on how Techno crossed over to Europe from the states. Created in the USA, established in Europe ;-)
If anyone's interested, this book is pretty cool:
Energy Flash: A Journey Through Rave Music and Dance Culture: Amazon.co.uk: Simon Reynolds: Books