Biztalk 2010 Certification
If you are using SharePoint in your corporate Environment, be it Administration or Development in SharePoint, I believe this collection of Documents and ebooks in doc, pdf, xps, visio formats will be very handy and useful for your day to day work. Feel free to download it.
I hope to add more links so expect this list to grow.
I am sure you are excited about Windows Workflow foundation. Who is not? except those poor Java guys...
Here is a collection of Videos available on Windows Workflow Foundation 4. I hope you find it useful. The list will keep growing, so feel free to bookmark this page for later reference.
Windows Workflow Foundation Video Tutorials
MVC -- Models, Views and Controllers:
Here is a Training Kit for Visual Studio 2010. Download it Free.