Great documentary series on the origin of spices!

Follow this link to BBC i-player to watch BBC's "Spice Trail". Fascinating and thought-provoking stuff, with some pertinent comment on fair trade especially in the episode about cinnamon...
http://www.bbc.co.uk/iplayer/episode/b00yrvhj/The_Spice_Trail_Pepper_and_Cinnamon/