One of the coolest things about the project has to be their data presentation. Instead of using static trees on their website, they've decided to use dynamic hyperbolic trees. They only have two draft trees up right now, one for teachers and one for researchers (notes: Java is required, they're mainly for demonstration, the names aren't the easiest if you don't know plant taxonomy, and the research tree seems easier to use at the moment). The hyperbolic trees include a detailed phylogeny of plants, but you see only a few nodes at a time. You can drag nodes you're interested in to the center of the screen and more nodes related to that one become visible. It's intuitive; try it.
Want to see more detail about land plants?