[Xmonad] Unusual tiling/tesselation ideas, anyone?

I'm interested in seeing if there are some other unexplored tiling algorithms out there, we could try out. Fib spiral tiling seems one option. There must be some other cool ones (just start at http://en.wikipedia.org/wiki/Tessellation). There's a lot of research on plane tiling we could just adopt directly. Anyone want to write a few interesting ones? It would be neat to have xmonad be a testbed for novel tiling interface design, due to its simple pure layout system. -- Don