I didn't go to the recent Le Web conference, and confess I didn't pay much attention to Graham Holliday's remark on Comment Is Free, Live from Le Web, that "The most interesting session of the morning thus far has been from Hans Rosling, professor of international health at the Korlinska Instituet in Stockholm and co-founder of GapMinder."
However, I've just watched an earlier Rosling talk on TED, and it's fascinating. Off topic? Maybe. It's about things like world population and income, life expectation and family size, and how things have changed over the past 40 years or so, but at the very end it does have something about the Internet and something important to us in particular, free data.
I also notice that the Hello World 89 blog posted The Man of Le Web 3 :: Hans Rosling NOT on blogging with links to the same talk on YouTube. In this case, the talk is in three parts. Whichever option you choose, I'm sure you won't regret watching it.