Marketplace Money/American Public Media, May 30, hosted by Tess Vigeland
http://marketplace.publicradio.org/display/web/2008/05/30/sec_investment_ranking/
“The ratings agencies played a big role in putting investment-grade stamps on a lot of these mortgage-backed securities, and so the questions about how they went about rating these structured finance products—which by the way are really about sort-of repackaged mortgages, sliced, diced and julienned in a way that makes some aspects of them safe and some more risky—is going to be a real issue.”