Willow Garage just posted Youtube videos of all the presentations at this years ROSCon. 11+ hours of great robotic content:

• Day One Opening Remarks (10mins) [youtube]
• Day One Keynote: ROS: Past, present, and future (66mins) [part 1] [part 2]
• URDF and You (44mins) [youtube] [slides]
• Motion Planning in ROS (44mins) [youtube]
• Introduction to rosjava (39mins) [youtube] [slides]
• The Gazebo Simulator as a Development Tool in ROS (46mins) [youtube] [slides]
• Using ROS on Field Robotic Experiments in Remote Locations (20mins) [youtube]
• ROS for Humanoid Robots (23mins) [youtube] [slides]
• “Moe” The Autonomous Lawnmower (18mins) [youtube] [slides]
• Lightning Talks (46mins) [youtube]

• Day Two Opening Remarks (2mins) [youtube]
• Day Two Keynote: Architecting Real-time Control of Robonaut 2 using ROS and Orocos (56mins) [youtube]
• Understanding tf (38mins) [youtube]
• The current state and future of multi-master, multi-robot systems using ROS (35mins) [youtube]
• Writing Hardware Drivers (40mins) [youtube] [slides]
• Understanding the Kinect (42mins) [youtube]
• ROS on Windows (19mins) [youtube]
• The ROS wiki how to make the best use of it (19mins) [youtube]
• Measuring and Tracking Code Quality in ROS (22mins) [youtube]
• Teaching Robotics with ROS: Experiences, Suggestions, and Tales of Woe (20mins) [youtube]
• Robot Web Applications (22mins) [youtube]
• Using Open Sound Control Hardware and Software with ROS (13mins) [youtube]
• Closing Remarks (4mins) [youtube]