Annabeth - You are youthful and at this point there isn't stress to date or be unique or nearly anything so just let items occur. Letterman's past episode aired on May 20, 2015, and opened with a presidential sendoff featuring four of the 5 residing American presidents, George H. W. Bush, Bill Clinton, George W. Bush, and Barack Obama, every mimicking the late president Gerald Ford's assertion "Our long nationwide nightmare is over.