Kirk Evans is a Microsoft Architect for the Azure Center of Excellence.
Introduction to SharePoint and Azure IaaS
Building SharePoint Apps with Windows Azure Platform as a Service
SharePoint Solutions and Architectures on Windows Azure Infrastructure Services
Understanding Authentication and Permissions with Apps for SharePoint and Office
Gene Kraybill created SharePointShow.com, which sports an impressive collection of information on SharePoint V3 new features as well as a podcast. Here's hoping he gets around to show #4 and finds a stride to provide regular content as this could be a very valuable resource to the community.