Naresh Jain - Great Agile Blog
I've found this great Agile Related blog by Naresh Jain.
Naresh works for ThoughtWorks (These guys just keep getting better and better people!) and has lots of information and knowledge about Agile Development Techniques and Using Tools like Fitnesse (An framework for integrated testing).
Through his blog I've found out that there was a very unique conference called "Simple Design and Testing" Conference, which features folks like Ron Jeffries, Brian Marick and other Agile Figures.
Here are the Notes in the conference wiki. Some great topics!