... but I ended up loving it. It's "Jonah Lehrer on The Science of Creativity."
I was worried that it would be hand-wavy to the point of distraction, but it's really not. To the extent that we know anything in a truly scientific sense about creativity, Lehrer seems to have it all at his fingertips. Plus, he's a really good speaker, both in his presentation and in the Q&A. I would be shocked if you did not learn at least a couple new things.
The talk itself is about thirty-seven minutes long, and the Q&A is about twenty-six.
P.S. The link to the grit survey mentioned during the talk is partway down this page. I have not yet taken it, since I'm pretty sure it'll be terribly confirming of my self-impression. But maybe after another coffee, or beer, or hot shower, or walk.