James Newkirk and Brad Wilson have put out a new testing framework to paralell some basic standards (ie no SetUp/TearDown methods, better expected Exception handling and use of generics)

download here:
http://www.codeplex.com/xunit

read Jims blog here:
http://jamesnewkirk.typepad.com/posts/2007/09/announcing-xuni.html

Looking forward to using it. 🙂