So, to get the ball rolling I'd like to suggest two articles on levels of thought in poker: Level Headed Thinking and How to Spot a Level 3 Thinker, both by Andrew Brokos. These articles provide a thoughtful explanation not only of the various levels of thought in the game, but also how to identify and respond to the level on which your opponents are thinking; goes a long way toward answering the perennial question "How the **** could you call with that?!?"
The sequel to the Carl Sampson article I mentioned a few weeks ago, Mental Disintegration in Limit Hold 'Em, Part Two, is now available for your perusal in the 2+2 Magazine. While I liked Part One better, this article still has some good discussion of personal tolerance limits and causes of tilt, and all of us can benefit by keeping aware of such things.
That's all for now. Perhaps I'll try a PAHWM post next.
PS - Seriously, what is with bad players over-betting limped pots in the early levels of a HU match? Why are you betting 100 into 40 after I check on a dry flop? Why did you bet 200 into 60 on the turn when I checked the flop behind? What the hell is that? I'm not kidding, like every other weak opponent I play does this. Has anyone else noticed this phenomenon?