rence #3.  I love MPC#3 -- it's the one where we all stop posturing for most of the weekend and enjoy some all-out geeky fun of the brain-bending variety.  And despite the tragic failure of certain colleagues to understand why it's important to get to the book exhibits a good twenty minutes before they open on the first day, I am having a blast.  Helpfully, all the events that actually required my presence and/or participation were scheduled early-ish and are already over.  So here are some entirely unhelpf