Mr Hans Rosling and his Trendalyzer (A.K.A Gapminder)

One of the most amazing data visualization tool i've seen. Basically this lecture got me started on this topic!

He's done some research on World Health, and developed this tool (yeah, Google guys bought it!), using mostly data from UN and other international sources that people had a hard time to access. He also lectures on TED about it!!

And be sure to check out Rosling's new talk on TED, with innovations and a Grand Finale!

Source: TED Talks (you should really dig into this 20 minutes mind-boggling lectures by amazing people, famous and infamous) and Gapminder