The breaking and the knuckling
Dave Allen posted a terrific PITCHf/x article at Baseball Analysts yesterday, addressing one of my pet peeves with most PITCHf/x graphs: the lack of context. Graphs of pitch movement are cool and all, but virtually meaningless without context (which is true of virtually all graphs, by the way).
Dave Studeman was called a "national treasure" by Rob Neyer. Seriously. Follow his sporadic tweets @dastudes.