Post MSDN Tech Talk: Introduction to Language Integrated Query
Okay, I didn't have any slides today, and I redirected people to this blog this morning. So allow me to summarize the main points that I discussed. I also have some links to external resources where you can get more information on LINQ. This is actually a repost from my previous entry .
Automatic Properties, Object Initializers, and Collection Initializers *
Extension Methods
Lambda Expressions
Query Syntax
Anonymous Types *
* Compiler tricks that you can make use of even if your target framework is .NET 2.0 thanks to multi-targeting feature of Visual Studio 2008
LINQ
The LINQ Project -  MSDN Portal where you can find all the information to find out more about LINQ (yes there is a LOT of content ;) )
IQueryable vs IEnumerable 
LINQ to SQL
LINQ to SQL This channel 9 video should be give you an overview of what LINQ to SQL is
Scott Gu's entries on LINQ to SQL 
VB 9.0 + VB XML support
Overview of VB 9.0
Erik Meijer Shows Us His Favorite Visual Basic 9.0 Feature - XML Literals
C# 3.0
C# Version 3.0 Specification
 
I'm sure this will be enough to get you guys started. Will be posting more stuff on the new technologies soon :)