As a follow-up to Fritz's earlier post, Poor Mojo Newswire: Drudge Headline: NO BIBLE USED AT OBAMA RE-SWEAR, I offer:
Why doesn't every president swear his oath of office on the Lincoln Bible? - By Noreen Malone - Slate Magazine
According to official records kept by the Architect of the Capitol, Teddy Roosevelt is the only president who wasn't sworn in using a Bible; he took a rushed oath of office in 1901 following the assassination of William McKinley. However, it's rumored that LBJ was sworn in using a Catholic missal aboard Air Force One after Kennedy's assassination. John Quincy Adams, according to his own letters, placed his hand on a constitutional law volume rather than a Bible to indicate where his fealty lay. Franklin Pierce "affirmed" rather than swore his oath on the Bible, reportedly because of a crisis of faith following his son's death. There are no known inauguration Bibles for presidents John Adams through John Tyler; in fact, there's no concrete evidence that those early presidents used a Bible at all for the oath.
As it turns out, the pics of the re-swear are just misleadingly cropped; Obama is raising his right hand and has his left on the fender of a '59 Corvair--which is the same car that Gerald Ford was sworn in on.
One time, I taught some ACT prep courses at a local community college. Since I was technically a government employee, I had to swear an oath to uphold and defend the Constitution by any means necessary in order to get my paycheck. Fortunately, none of the kids in the class made an overt or implied threat to our founding documents.