AVR Microcontroller Class
This page is a redirect. We've just started (Feb 28, 2011) a new round of microcontroller class. Pages will be built up incrementally in the newer class tree. When the new class info overtakes the past, it'll supercede.
But for now, it's in a state of flux:
AVR Microcontroller Class 2011 (currently a work in progress, incomplete)
AVR Microcontroller Class 2009 (records what already happened, full of rich information)