Theologically, I'm in line with many of Warren's points and truly enjoyed and benefited from his book. But I got more from his talk because of the way he connected what he knows (Christianity) with the wider themes many of the TED talks seem to encompass: purpose, service, social awareness, innovation and betterment. Warren takes on the elevation of income and fame he's found himself in via his book's success. Great self-analysis and broader debate of net worth vs. self worth.
Scroll through the speakers and find some folks you think you already are interested in or agree with, then find some folks you have no understand of or interest in. These will leave you inspired.