They are all worth listening to. (You have to scroll down to get to the Research Briefings.)
My lecture starts at 47:30 (and you can get there directly by clicking on the link "Market Design: The Economist as Engineer. Alvin E. Roth" It's 20 minutes (it was supposed to be 15, with 5 minutes for questions, but I wasn't the worst offender...).
Not shown in the rush is the final slide from my Nobel lecture, about market design being a team sport:
Update: here's a link that should take you directly to my lecture