Radix sort is one of those tricks that doesn't help often, but every once in a while can produce spectacular results. Here it is showing a 4x speedup on a particular operation in git:

https://github.com/git/git/commit/8b8dfd5132ce91f632b5303c39...

Yeah, I am kidding - don't worry I won't, I can imagine that getting pretty irritating :P

I did this as a quick hack on a whim about a year ago (was a visualisation I wanted to see but couldn't find one quite like this), I am pleasantly surprised by the positivity on this (I kinda posted it on a whim), so I think I will probably hack on it again :-)

It's tempting to code up a whole bunch of sorting algorithms, merge and heap sort are definitely high on the list.

I find this visual+audio version both entertaining and genuinely useful as tracking changes in multiple sounds at the same time that quickly, combined with the visual process gives more tangibility to the algorithm. Plus the punchline was unexpected and fits well to a "credits" part.