Thank you Chris Sells :)
In his post, Chris asks whether all of the features shown in this demo will work in the other Visual Studio products. The answer is yes. The way we've thought of our products for Visual Studio 2005 is that it's a Russian doll model, meaning that C# Express is a subset of Visual Studio 2005 Standard, which is a subset of Visual Studio 2005 Professional, etc, etc.
You can find a walkthrough of how it works here, and EddWo has made some cool modifications that you should also play with.