I had the privilege of doing the first presentation for the C# SIG the other night. The presentation was the second part of a presentation I did for them last month on Entity Framework 4. The intent of this presentation was to cover the fundamentals of Entity Framework and show my fellow devs how easy it is to get started using Entity Framework. Along the way, I attempted to mentioned common and best practices used in the field and gotchas to avoid. You can download the sample code and presentation here. Entity Presentation Files
See the comments section of this post for my follow-up answers to questions I received from the group last night.