Since Christmas, or thereabouts:
The Man Who Knew Infinity: A Life of the Genius Ramanujan by Robert Kanigel. More Indian history than I bargained for, but then there's a lot of it with which I am not familiar. He was a very interesting person.
Thomas Jefferson by ***** (I can't remember, and I don't have the book with me.)
Light Falls: Space, Time,and an Obsession of Einstein by Brian Greene.
I am planning to reread The Name of the Rose soon. It's too detailed and intense for one reading to suffice.
Philosopher, Teacher of English and Math, Soldier of Fortune, Bon Vivant, Heart Transplant Recipient, Knight of St. Andrew (among other knighthoods)
Freedom is not free, but the US Marine Corps will pay most of your share.