I recently saw this documentary on television called The Spice Trail. I thought that it was really interesting. I enjoy spices, food and spicy food so it was right up my alley. The documentary traces back the history of a specific spice (vanilla, saffron, nutmeg, cloves, pepper or cinnamon) and highlights how the spice and trade of the spice influenced world events. If you are a foodie I think that you might enjoy it too.
You can watch the documentary on YouTube or right here. (59 minutes)