Peter gives an excellent example of doing real-world Test-Driven development using NUnit 2.1. It's all about simplicity. This example is good because it's not really an example. It's something he actually had to do, and he just shows how he started doing it.
Very nice. It gave me lots of confidence in how I write my unit testing code. It's practically the same technique. Teeny-tiny steps. I find the amount of bugs I find and fix before they turn into all-nighters staggering.