Interactive Visualization of Genealogical Graphs

I'm about to try to design a UI-flow editor. It will require some heavy duty graph visualizations, and maybe I'll borrow some ideas from this video. Just watching it makes me feel dizzy and ignorant. I suspect there's a whole field of research that I have yet to explore. This video is from a conference called InfoVis and it's from 2005. I sure would appreciate any comments on where I can find more cool connection-graph-stuff.

/Staffan Lincoln - 4/2/2008