These data visualisations from Chris Harrison are so beautiful they are an art-form in themselves:
Using data from the digg API, the top ten most-dugg stories of the day over one year rendered in a series of tree-ring-like visualisations (moving outwards in time). The colour of the rings relate to digg's eight top-level categorizations, the thickness of each ring is linearly proportional to the number of diggs the story received.
The Colour Flower
Using a data set of colour names collected on the internet featuring more than sixteen thousand colors labeled by people online.
The Internet – City To City Connections
Using data from the Dimes Project, showing how the Internet's routers are connected geographically. Almost 90,000 connections between cities all over the globe are shown.
Amazing. More here.