Well we decided we should do some unit testing on our asp.net project. We used NUnit.Asp. i must say the thing works realy great. the whole thing is based on xml document model of the page. so accesing tags and their attribs is preety simple. the only "drawback" i could think of is that every tag you want to get has to have an id. all in all i must say the thing is quite usefull. i build some wrapper classes that we needed and we could test anything you can think of, except javascripts that executed on the client...