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

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Andre de Cavaignac and Matt Insler of Lowereast Software present how to develop with MongoDB in a C# and .NET context.

Video Producer: 10gen

Mads Torgersen from Microsoft talks about C# 5. Mads is Anders Hejslberg’s (the designer of the C# language) right hand man.
Watch the video on SkillsMatter.com

Jon Skeet presents in this video some of his favourite ways of abusing the C# language.
Watch this video on Oredev.org

This video focuses on the only new feature in C# 4 that really matters: the dynamic keyword. There are some new possibilities that were previously only achievable with languages like JavaScript and Ruby. We will touch on ways that using dynamic can change your code.

Video Producer: Chicago ALT.NET