Cool thing in eclipse!
So if you right click on a Unit Test in eclipse you can run it in the embedded test runner.
But I didn't realise that you can also click on a package and that will run all the unit tests in that package.
So, no more trying to figure out which unit test failed in ant and running one-by-one in eclipse!
Just right click on your unit-test package and run all your unit tests in eclipse :)