I have a decent knowledge about Washington's political and military careers, but what I didn't know was that he was a highly successful businessman. Here's a fascinating article about his entrepreneurial ventures.
Washington's reputation suffered among historians of the previous century. I think that that's because he was self-educated and left behind few writings from which we may perceive a witty intellect. But he had a remarkable sense of prudence and intuition about the forces at work in Revolutionary period. And this was topped by a quite extraordinary physical courage. The American people were extremely fortunate to have him when we did.