Saw it not too long ago. Got it from the public library. It's quite interesting. Trivia: at about 8 minutes into the documentary German director Werner Herzog is seen chatting with Hoffman. Herzog actually gives the title to this documentary.
The documentary only lasts some 60 minutes, so it goes by rather quickly. Doesn't say that much about teas themselves, as it is rather about Hoffman and buying teas from small farms in China, and problems encountered along the way.
I'm still unsure about the bit where Hoffman says he had to tell the Chinese what good earthworms were for the soil. Eg. since the revolution Chinese farms were told to use pesticides and lost knowledge of natural farming. Unless he met a bunch of really clueless Chinese.
One thing for sure, Hoffman knows rapidly how to discard pesticide teas with a quick smell. I presume this kind of tea never makes it here as people would complain about its bad smell. On the other hand, excellent teas also does not seem to make it for the general consumer here.
Speaking of generals, recently I was told by a Chinese colleague that whole mountains are garded by the army so that these tea production goes to the leaders of the country.
All in all, things evolving around tea are interesting, be them historical or trade centered in our times. As such, this documentary is quite nice to watch. Although too short. Recommended.