Data Visualization

As a Creative Designer I'm involved in the visualization of information. I'd like to open a free ranging discussion of data visualization.

I'm interested in hearing about the challenges of visualization among the CR4 community and some of the innovative ways you've found to put information into visual form. Suggest some good sources of reading on the topic. Any contribution would be appreciated.

To kick off this discussion, here is an interesting timeline of Milestones in the History of Thematic Cartography, Statistical Graphics and Data Visualization, An illustrated chronology of innovations by Michael Friendly and Danial J. Denis