A fascinating graphical representation of all the major sorting algorithms, using Java. And this page animates four different algorithms with larger data sets.
How to explain the pure joy that can come from small epiphanies in programming? The depth of my satisfaction is way out of proportion to the miniscule size of the insight I just gained into Java threads. I have been making these small discoveries every day for a while now with relatively little impact on my disposition, but for some reason this one put a gigantic grin on my face, and I suspect that it won't come off for the rest of the evening.