Xenographics – Weird but (sometimes) useful charts
The name says it all really: it's where the exotic beasts of data viz live. This is a good place to look if your data doesn't seem to fit the common patterns. It will show you what BioFabric Charts, Manhattan Plots, Divided Edge Bundlings and UnTangle Maps are. But when you are still looking at it at 3am, go to bed, for goodness sake.