I'm a big fan of Jefferson, I enjoy reading the Declaration of Independence every year. It's hard to imagine writing anything that could have such an influence on the world, and still be so easy to read and enjoyable.
But after the US was independent, and after Jefferson became president, I get the feeling that if he had solitaire on his computer, he might have been playing that some.
He didn't, so instead he invented ciphers, one of which didn't get cracked until this week. Amazing.