Kellerman Software announces an update to NUnit Test Generator; an application to automatically create unit test stubs for VB.NET and C#. The NUnit Test Generator can create tests for MbUnit, csUnit, xUnit, and Microsoft Unit Tests. Each template can be modified and custom templates can be created. New features include, generating tests from a Visual Studio Project, creating a Visual Studio Test Project, ability to create tests for internal, protected, & private methods, interface test generation, abstract class generation, and adding tests to an existing file without overwriting.
Source: http://www.kellermansoftware.com/p-30-nunit-test-generator.aspx