This is from the mind of the very creative John Maeda, of MIT Media Lab.
400,000 people are currently estimated to be dead in Darfur. With each of the letters D, a, r, f, u, r representing a single person, this is how many people are now dead.
Scroll your browser and everything will look the same.
You will feel nothing -- that's the problem.
More of Maeda's creations over the years can be found here. Also, his book and his blog about The Laws of Simplicity in design, business, technology, and life... and a rambling & sometimes-interesting talk by him at TED about simplicity.