Legend has it that monkeys were first used to collect tea ten centuries ago, because upon seeing it's master trying to reach some tea growing wild on a mountain face, the monkey climbed up the steep face and collected the tea growing there and brought it down to his master.
Monkey-picked tea is now harvested in only one small village in China. Link -via the Presurfer
http://pencilandleaf.blogspot.com/2009/03/leaf-of-day-of-myth-and-monkey-tea.html