Free documentaries in English on-line

I want to share a very useful link I found in which we can enjoy different documentaries in English. One of them "The Adventure of English " tells the history of the English language since its origin.
I highly recommend to use this documentary for advanced students which are interested in language and literature. Here I enclose a proposal for a lesson plan based on this documentary.

Lesson Plan

Pre-activity: ask your students why language is so important for human beings. Ask them if they know anything about English, make them talk in pairs, then, share some answers.
While- activity:  You can make your students watch this documentary, fill a worksheet with questions about it while they watch.
Post- activities:  1. They can create an activity related with the history of English (crossword, puzzle, etc)
                            2. You can make yor students prepare an small report about a certain period of the      history of the English language for the whole class as a round up activity-.

Oops, I almost forget, here is the link:

http://topdocumentaryfilms.com/adventure-of-english/