Flowing Data (Strength in Numbers): Great examples of data visualization from the author, Nathan Yu, a PhD statistics student with a background in design. He also compiles other data visualization resources and encourages sharing and open-source.
Flowing data: http://flowingdata.com/
Information is Beautiful (Ideas, Issues, knowledge, data – visualized!): From the author of The Visual Miscellaneum, David McCandless. McCandless describes himself as a ‘visual & data journalist’ interested in ‘how designed information can help us understand the world, cut through BS and reveal hidden connections, patterns and stories underneath. Or, failing that, it can just look cool!’ He also has a great scrapbook on Flickr at http://ow.ly/DaIG
Information is Beautiful: http://www.informationisbeautiful.net/
Infosthetics (Where form follows data.): Maintained by Andrew Vande Moere at the University of Sydney, this site ‘collects projects that represent data or information in original or intriguing ways.’ His examples veer wildly from mapping the impact of global warming to a tour of the brain to stitching travel itineraries on postcards – food for thought!
Visual Complexity: Focusing on visualizing complex networks, this site archives and annotates projects from around the world that use systems visualization tools. ‘he project’s main goal is to leverage a critical understanding of different visualization methods, across a series of disciplines, as diverse as Biology, Social Networks or the World Wide Web.’
Visual Complexity: http://www.visualcomplexity.com/vc/