I just purchased "Old Skool Bikes of the 70's & 80's Vol 1: The Mopeds" from the above people.
All the peds featured are top tanks - called sports mopeds in the UK - except for one step-thru Garelli.
The interviews are with middle-aged guys who rode them as 16 year olds and now restore and ride the makes and models of their youth.
Very good value for money. The DVD does play on US DVD players as I can attest having just watched the documentary.