The sample code is available for my LINQ presentation.
This requires Visual Studio 2008, SQL Server 2000 or 2005, as well as the Northwind database. I used the "extended" Northwind that was temporarily distributed for LINQ, but I don't think anything in the sample actually requires it. It's available here; just look down the page.
The samples include a lot of good stuff! Complex queries, N-tier application prototypes (including compiled queries, caching, isolating the presentation layer, full CRUD operations, and optimistic concurrency support), queries to DataSet objects, stored procedure examples, non-flat result sets, and more.
Slides to follow "soon", for appropriate values of "soon."
ETA: One sample program does require the "extended" Northwind. It's SprocTwoResults.aspx, which calls a stored procedure that's not in the "standard" Northwind.