Gut microbes video

I came across this animation which does a great job of explaining why microbes are important to our health.

http://www.npr.org/templates/event/embeddedVideo.php?storyId=244526773&mediaId=245227995&inf_contact_key=a5d804ae408c5b485aae140524d4fdff4851d1de8b0988c4bf4f63146f1d23f8