Dr. Fraser, Director of the Institute for Genome Sciences at the University of Maryland, is a big deal in the science of genomics and microbiology. Her lecture is an introduction of ~17 minutes in length. It is worthy of your attention, especially if you need an introductory refresher on the microbiome or are just a fan of Dr. Fraser's science.
The only thought I'd add is that while ecology is a persistent theme in this talk, there is also an evolutionary story to be told as well. More to come on this later as our lab delves into the microbiome-evolution axis.