Judging from the first two, I will enjoy Alistair Cockburn's papers. It will take me a while to get through that. :-)
I should also note that on my home node there are quite a few random links. People who are looking through the various links in this thread might also like to follow some of them.
And a random exercise for the brave that just came up in chatter. Keep a log of bugs you discover in your own code, with notes about what you think caused the bug. Review that log periodically. If you feel truly brave, have someone you respect review said log with you. Excellent, if painful, way to learn what you personally need work on.