Thanks to Andrew Stopford and everyone else who works on MbUnit development. MbUnit 2.4 was just released. If you are not unit testing or practicing TDD in your projects, I don't know how you could choose plain old NUnit over MbUnit. If you are using regular NUnit it is very simple to convert your projects MbUnit, they use the same [Test] attribute. MbUnit has: Row Testing: [RowTest] [Row("Hello")] [Row("Goodbye")] public void TestString( string myString ) { // do your tests in here... }More row...