The video is by Dan Wells, and it was delivered at a writing symposium in 2010.It is gold dust.
The link takes you to the first of five parts. Once you've watched part one you will want to listen to the rest, I guarantee it.
(As an aside, the podcast I was listening to was The First Million Words. It's worth subscribing. You should also try Writing Excuses where you'll find Dan Wells popping up again.)