Connected to this topic, I found this other video with the typical speech of Charles Chaplin in the film The Great Dictator. His English is perfect but I've used the link with subtitles because the message is fantastic as well.
To finish with, I'd like to share this link with the song Imagine by J. Lennon. I hope you'll enjoy this post; my intention was to show you that no matter you use to learn English but from my point of view it's much more attractive when you use things that mean something to you.
See you at school.