Here is source code for the videos from this series.

New Features in Entity Framework Part 1: Self-Tracking Entities

New Features in Entity Framework Part 2: LINQ to Entities

New Features in Entity Framework Part 3: Model-First Development

Graphics and DirectX Performance Adjustments This video doesn’t have source code

New Features in F#

WCF RIA Services Support

Windows Azure and the .NET Framework (video not yet posted)

Upgrading to ASP.NET MVC 2 (video not yet posted)

Silverlight Support (video not yet posted)

Testing Web Applications on Firefox (video not yet posted)