In our project, I found there are many cases that we need to run tests only when some prerequisites are satisfied(such as specific platform, specific url can be reached and etc.),
junit provided the assumption, it is great, however, I feel it has some limitations(I addressed them in my project home page.)
I wrote a junit-ext to run test with @Prerequisites annotation, I host the project here, http://code.google.com/p/junit-ext/ the code are tested and used in my project everyday, I am quite happy to live with it, so I think maybe other people may also want it.
If you guys feel it is interesting. I will be really glad to contribute it to junit