When the coverage markers show a red dot, it has always baffled me that there's no obvious way to get from there to the point of failure. Clicking on the dot shows all the tests that go through it, with a cross or tick showing success or failure, but what I've always wanted to do was to be able to double click on a red X and be taken directly to the line on which the failure occurred. (Or failing that, at least to be taken to the NCrunch Tests panel, with the relevant test highlighted.)

Perhaps there's some shortcut I'm missing, but as it stands, although it's really easy to see that something failed, it's then unnecessarily hard work to be able to see the details of the failure.