Darrell Norton gives us some tips and tricks about using NUnitASP.  We have just started to look into this as away to improve our test suite.  I have always found that the hardest part to test is the User Interface.  Whilst I have read and tried most of the different ways of getting around testing the user interface eg Humble Dialog pattern, I have aways thought that the best way to test the UI is to do exactly that.  NUnitASP gives is one way to achieve this.

via http://dotavery.com/blog/archive/2004/01/22/338.aspx