The thing I really dislike are unit testing styles that use mock objects a lot. I see some people say that you should test each object in isolation, mocking out any dependencies. That seems wrong headed to me. I prefer my unit tests to test everything all the way down. The only thing I would mock is the file system, which is useful for testing file loading code.
To avoid getting hung up on taxonomy I much prefer defining the scope of tests with the control theory terms of Observability and Controllability, http://en.wikipedia.org/wiki/Observability. That makes it way easier to categorize tests in terms of how effective they are and gives useful starting point to determine whether the granularity of the test really is able to adequately test the desired behaviour.