[David Rice] Atchison may have been president of the United States for one day, but no one is sure. The facts are these. Atchison was president pro tempore of the Senate on March 4, 1849, the day President James K. Polk's term expired at noon and one day before Zachary Taylor was sworn in (Taylor refused to take the oath on March 4, since that was a Saturday). Because Polk's vice-president had resigned a few days before, Atchison, it would seem, was technically the only person legally allowed to exercise the powers of the presidency - by virtue of his being third in line in the succession. According to the law, the president pro tempore automatically became president when the presidency and vice-presidency were vacant. Nothing happened during Atchison's one days in office, though a few friends jokingly requested appointments to the cabinet.
And these are just some of the better ones! And the shorter ones, that I didn't mind typing out. This book is chock-full of interesting stuff. I'd suggest you check it out of your local library or get ahold of a copy for youself. I'm sure I'll keep adding more as I go through, so if you are interested in this kind of stuff, keep an eye out. xoxo
TITLE: The Wisdom of Crowds
AUTHOR: James Surowiecki
TITLE: One-Night Stands with American History
AUTHOR: Richard Shenkman & Kurt Reiger