Yes "Silk Road" was very nice documentary. It is still on my "All time fav" list. But can't find dvd anywhere.

I found "Honey hunters of Nepal" dvd on my recent visit to KTM. That was also a great documentary but it did not make my heart beat faster when I watched it recently on dvd. Teti bela ta ambo kasto dhuk dhuk hune tyo jhundera maha nikaleko dekhda.