Now, this sounds interesting. Another brain-child of the MSR (Microsoft Research) Team this is a tool that takes testing into new dimensions: Spec Explorer.
A short excerpt from the site:
“Spec Explorer 2010 is a tool that extends Visual Studio for modeling software behavior, analyzing that behavior by graphical visualization, model checking; and generating standalone test code from models. Behavior is modeled in two ways: by writing rule machines in C# (with dynamic data-defined state spaces) and by defining scenarios as action patterns in a regular-expression style….”
If you believe you need some more testing approached, then check this one out. Available for Visual Studio 2008 and 2010.