Here's a review of data visualization tools from Randy Krum, who wrote Cool Infographics:
With his blog here: http://www.coolinfographics.com/
And some other bits and pieces to check out:
All pooled together with more resources on our AAAS Fellow FIRE Affinity Group website for Federal Innovation and Research Evaluation: https://sites.google.com/site/aaasfellowfire/resources
...blogging about good ideas. Data visualization makes light bulbs turn on inside our brains -- we start thinking down different connections.