A catalog of common issues individuals and teams run into while doing TDD on their projects is well under way in this blog entry.

Lisa Crispin provides a couple of good stories about her experience on teams and the ratio of testers to developers in this blog entry.

Mark Levison captures some good references from thought leaders in the Agile community on what constitutes a good test in this blog entry.

The Microsoft Patterns & Practices group had put together a suggested process for implementing architecture while keeping an Agile method of software development in this article.

The use of exploratory testing along with unit-level test-driven development is asserted as potentially more valuable than automated acceptance testing in this article from Brian Marick.

This email sent to a discussion forum discusses the experiences of a company with 27 development teams using Agile methods.

Lyssa Adkins provides information about handling conflict on teams including a practical 3-step intervention path in this article.

Test execution beyond the traditional use of developer unit tests in the Agile community has been debated. Elisabeth Hendrickson has a great article shared on her blog here.

Dhaval Panchal defines and provides usage scenarios for capturing, using, and misusing velocity in this article.

Here is the video of Brian Marick’s keynote talk at Agile Development Practices 2008.