24 Ways: CSS for Accessibility by Ann McMeekin is a nice set of CSS tips that would make a good handout or class discussion.
Six Tech Predictions for 2008 from Web Worker Daily is a quick and interesting read.
Why Accessibility? Because it’s Our Job by brothercake argues, “If we call ourselves professionals, we owe it to our clients, their clients, and ourselves, to do our job properly. A chef must care about health, a builder must care about safety, and we must care about accessibility.”