Adding my vote to the petition: Unit Testing support should be included with all versions of Visual Studio 2005 and not just with Team System.

The benefits of Test-Driven Development (TDD) are too important to ignore, and there’s no reason why every developer shouldn’t have access to this capability in our tools.  For developers who don’t want TDD, they can simple ignore the feature. And for those who want to use the feature, it should be consistent across our entire Visual Studio .NET 2005 product line.