I will be speaking to the Fort Worth .NET User Group on Tuesday November 8th. They've asked me to speak on Test Driven Development and so it will be an evening on Red-Green-Refactor. I hope to shed some light on Agile methodologies in general as well as talk about tools which make TDD easier, most notably of course NUnit.
If you're in the area, please be sure to check out their website and plan on attending. Admission is free and there are always great prizes to be had and free pizza for all attendees.