This documentary based on the 2008 book by the same name is about people obsessed with collecting, preserving, and crossing rare fruit species and varieties. It's almost if one traded a Trichocereus or medical plant obsession strictly for tropical fruit. It's pretty fascinating really.
The story features among others two mango conservators from the Fairchild Tropical Botanical Garden hunting down a white fleshed mango and maintaining their 600+ variety mango collection and a Hondouran scientist with a very involved (1 seed in 1000 banana clusters!) Cavendish banana breeding program.
It's on youtube now:
Part 1 - The Evolution of Desire [44:33]
Part 2 - Defenders of Diversity [44:33]