I could also titled it "the first post of december", but we don't care, do we ?
There are tons and tons of inspiring videos all over the web. You could spend a few days on TED alone. But amongst all those I viewed, the following one is, imho, the most inspiring one.
Why ? Because it delivers the hopeful message that we can all understand, each others. Who know, maybe the language of mankind before the Babel tower was music ;)