A few days ago I caught onto the Human Planet series which is currently airing on BBC. Unfortunately, it was the 7th of 8 total episodes so I've missed most of the series, but the one episode which I watched was superb.
It was about Rivers. It was incredible to not only see how important these are to life everywhere, but also how unpredictable and powerful they can be. The effort put into making these documentaries is also extremely high.
I certainly suggest for everyone to watch the series when they get the chance - I'm currently catching up on it myself.
Whilst this isn't the Human Planet, I found it on YouTube and just had to share it: