On-line lectures on software architecture

It is surprising what you can find with some searching, for example full-length lectures about software architecture:

• Usability and Software Architecture: The Forgotten Problems
• O'Reilly Webcast: 10 Things Every Software Architect Should Know
• Agile Architecture Is Not Fragile Architecture
• Handling architecture in the agile world
  
• How to Effectively Evaluate Software Architecture and Identify Risks
• The Method Framework for Engineering System Architectures
• Service-Oriented Architecture (SOA) (an introduction)
• Transforming Software Architecture with Web as Platform
• Reliability Estimation During Architectural Design
• A Secret to Understanding Complexity_ A Temporal Approach to Engineering Software
• On Snowflakes and Architecture
• Winning the DARPA Grand Challenge [Robotics]
• Big ball of Mud

Note that I have not watched all of them (they are about 1 hour each) so I cannot vouch for any content and that the recording quality can be quite low.