I've been a fan of Sean Caroll's for some years now. By no means do I understand all of his writings and lectures, but the one above, from about 10 months ago, at the Royal Society in London, is about as good as it gets for us common folk, in explaining the significance of the Higgs Boson, discovered at the Large Hadron Collider on July 4th this year. In a single sentence: if we didn't have the Higgs Boson, the universe wouldn't exist. It's that important...
And his name comes to mind again today, as I see that his book, "The Particle at the End of the Universe" has won the Royal Society's Winton Prize for Science books. Now on my WishList.
Congratulations, Sean!