I've been participating in the inaugural podcast for the Microsoft Architecture series. From the website

ARCast is an ongoing podcast series created by the Architect Strategy Team with the goal of spawning insightful, enlightening and sometimes contentious conversations about the hottest topics in Architecture today

The topic for the first series of podcasts are the problems facing interoperability in web services today. The participants are myself, Jeffrey Schlimmer, Michele Leroux Bustamante, Roger Sessions, and Chris Haddad. Most of the discussion has been about adoption of WS-* which even though I work on web services that are utilized by millions of people every day, I've never really found the technologies outside the core XML web services standards (SOAP/WSDL/XSD) to be of much importance to our main scenarios.