I've been aware of SciShow for a while now. They make fantastic, short science videos about a vast array of different topics. I was delighted to see that they recently covered the Microbiome.

I fully recommend checking out their video for a great example of science communication.

If you like the video, you should definitely subscribe to SciShow's YouTube channel. If you have any more suggestions for good examples of Science Communication and exception You Tube videos, please share them in the comments.