Deep analysis of the tasks that must happen in an iteration - development, analysis, testing, etc.  Focus on the problems with staggering them too much, and suggestions on how to properly organize the team around those tasks.

Article compares different approaches to testing the workflow of an application - specifically a web application.  Detailed analysis of the maintenance & skill level tradeoffs for each approach.  Also touches on Selenium and Watir approaches.

An article on testing strategy for non-functional requirements that stimulated a fantastic discussion about functional vs. non-functional requirements. Great points are made both to eliminate and to highlight the distinctions. The strategy for developing a test plan is good, and worth reading alone, but this article is fun in that it went in a completely different direction with a very well informed debate.