The History of Tea: Video by TED
This is a really fun video that explains the history of tea in a nutshell. It covers the full history starting from how Shen Nong discovered tea, how Japanese monks brought the tea to Japan, and how Robert Fortune smuggled tea seeds to India for cultivation.
The video offers a very good summary of tea history with a focus on tea trade and how the rest of the world discovered tea. However, it does leave out some important parts of history, especially when it comes to the history of tea in China itself, such as the Ancient Tea Horse Route and how tea culture flourished during the Tang Dynasty.