One of Microsoft great resources for architects over the past few years has been it's ARCast series of Webcasts pioneered by Ron Jacobs.
Over the past month a new set of ARCasts have been published on Channel9. These ARCasts are episodes created by Microsoft Architect Evangelists in the field. They typically last about 15 minutes and are interviews with influential architects on topics they are passionate about. New ARCast episodes are published weekly.
Check out the latest episodes on ARCast.TV.