This video presents how developers can build RESTful solutions using Microsoft’s technologies, especially with WCF and .NET.
http://www.infoq.com/presentations/Building-Systems-with-REST

This short tutorial shows how to write recursive functions in C#.

This short video discusses the benefits and drawbacks of using the MVC Model-View-Controller approach versus the web forms. Model–view–controller (MVC) is an architectural pattern used in software development. The pattern isolates “domain logic” (the application logic for the user) from the user interface (input and presentation), permitting independent development, testing and maintenance of each (separation of concerns).

This video show how an existing application can be modified to move functionality into a separate assembly. Proper naming conventions will be discussed, as well as the ConfigureAwait method, which can be used to avoid unnecessary marshaling of data to the UI thread.
Watch this video on microsoft.com

AutoMoq is an “auto-mocking” container that automatically creates for Moq any fake objects that are necessary to instantiate the class under test. You can access those fakes through the mocker or you can just ignore them if they’re not important.

Having already built applications with ASP.NET MVC and various ORMs, what knowledge can we apply from this when deciding to utilise a document database, and indeed why would we? Over the course of an hour, we will survey several patterns and strategies that can reduce friction when using a document database in a online transaction environment.
http://ndc2011.macsimum.no/mp4/Day1%20Wednesday/Track2%201620-1720.mp4

This video explains how to build a RESTful .NET application with OpenRasta 3. OpenRasta is a resource-oriented open source development framework targeting the Microsoft .NET platform for building web-based applications and services. It focuses around resources and HTTP methods to simplify the creation of ReST-friendly interfaces.
http://www.infoq.com/presentations/Building-a-RESTful-Architecture-with-OpenRasta

This short tutorial shows how to use NUnit and Visual C#.

Related article
* Test-Driven Development (TDD) with NUnit

This video presents collected working experiences of several .NET projects using SpecFlow. This video presents questions you ran into when doing BDD with SpecFlow and possible answers.
Download this video from http://ndc2011.macsimum.no/mp4/Day1%20Wednesday/Track5%201500-1600.mp4

This video presents the foundations of great application design for Windows Phone and how to use them to build outstanding applications that will stand out and get noticed.