This is from Steve De Long. It's hopefully of interest to those of you who are interested in graphical representations of information. You know who you are.
In other news, my USAA calendar notes that today is National Teacher Day. Here's to cbertsch, estudioso, art_thirst, shamantraveler, nosato, tattooedbear, raykampf, rugbybearpa, muckefuck, naylandblake, poohbearjim, lostncove, sftekbear, and nashobabear [among others] - you all work in academia and/or teach, and I for one say "thanks!"