http://www.theonion.com/content/node/851171864: Unable to think of anything to say, Abraham Lincoln goes ahead and delivers the Gettysburg address again.
1904: Theodore Roosevelt saves the lives of hundreds of delegates by expertly shooting a pair of enraged white rhinos that had burst through the doors of the Chicago Coliseum.
1912: William Howard Taft easily secures the Republican nomination, forcing organizers to rethink the pie-eating-contest nominating paradigm.
1928: Herbert Hoover wows the crowd of supporters by waving to each and every one of them.
1940: The Republican National Convention is broadcast live on television for the first time, interrupting a Milton Berle sketch about two donkeys.
1992: The Republican National Convention in Houston somehow grosses $2.9 million for each attendee.
1996: Confetti enters the inner workings of Bob Dole's antiquated gear shafts, clogging the system, and causing the nominee to permanently lose control of his left hand
My favorite is 1992...