With such thorough reviews they have of DSLR's I've always been surprised they didn't do lens reviews, but that is about to change by the looks of it.

Read this to get an insight on how the tests are conducted. The lens reviews seem to be quite thorough also, I'm looking forward to see how this will evolve.

Check out the lens review page. A bit sparsely populated right now, and no Nikon's, but I believe that will change.