I have trouble articulating exactly what Jessica Hagy does on this blog, so I'll use her own words:
This site is a little project that lets me make fun of some things and sense of others. I use it to think a little more relationally without resorting to doing actual math.
And her own pictures:
Do check it out. Jessica's just gotten a book deal out of the wonderful work she's done with this blog, and if you take a moment to look at just a few of her entries, you will quickly see why.