George WashingtonHulton Archive, Getty ImagesNot only is George Washington the father of the country, he's technically the highest-ranking member of the nation's military. William Henry HarrisonHulton Archive, Getty ImagesHarrison kept a goat as his pet, but never bothered to name him. James BuchananHulton Archive, Getty ImagesThough James Buchanan was engaged once in his late twenties, she broke it off. Warren G. HardingCourtesy of the National Archives/NewsmakersWarren G. Harding loved playing poker and held weekly games at the White House. Barack ObamaPresident Barack Obama plays basketball with cabinet secretaries and members of Congress on the White House court in 2009.