Nice Unit
There's been much talk recently about NUnit rocking. It certainly does rock (although it's frighteningly over-engineered). I was interested to see an article by Eric Gunnerson espousing the use of NUnit, for two reasons: 1 - a lot of C# developers listen to Eric, so this will hopefully encourage a lot of developers to start doing test-driven development, and 2 - someone from Microsoft encouraging the use of an open source product?!?! Where's the embrace-and-extend? Where's 'M'-Unit?
Also, be sure to check out man/legend Ron Jeffries' series on TDD with C# and NUnit:
http://xprogramming.com/xpmag/acsIndex.htm