#15 Assassination Vacation by Sarah Vowell
Last year I read Vowell's The Partly-Cloudy Patriot, and I absolutely loved it. Nothing else I've read by her since has quite measured up.
This one wasn't bad - Vowell, a complete and utter dork for history, delves into the assassinations of three presidents who were not Kennedy (Lincoln, Garfield, McKinley).
It had its moments, some expectedly hilarious, some poignant (comparing US involvement in the Phillippines in the early 1900s with our involvement in Iraq). There was a lot of detail I just wasn't that interested in, though, and I skimmed a bit.