Every four years Americans go to the polls to elect a leader--a personage of unimpeachable sobriety and moral standing who will serve as a paragon for the rest of us. But truth be told, presidents and their families are people too--with quirks and character flaws like everyone else . . . and plenty of skeletons rattling around in their closets. Oval Office Oddities is a grand compendium of fascinating, sometimes embarrassing presidential facts,...