I took a trip to the Black Hills of SD based on his descriptions in "Crazy Horse and Custer". He's an excellent writer and careful historian. I've read his Lewis & Clark book "Untaunted Courage" (and "Lewis and Clark" published by [link|http://www.nationalgeographic.com/books/history/0792270843.html|National Geographic]), but haven't had a chance to read it yet. Beautiful scenery.
[link|http://www.nationalgeographic.com/events/releases/pr991022.html|Shackleton] is an amazing inspirational story. There are several books about him and his expedition that which have been published in the last few years.
"Harry Potter and the Sorcerer's Stone" is pretty good too. :-)
I second QED; and Guns, Germs and Steel - excellent books.
Cheers,
Scott.