Apollo has a namesake on both incarnations of Battlestar Galactica – in both, we have a Captain Apollo (source).

NASA named the spaceflight program that eventually took us to the moon after – you guessed it – Apollo. Apollo 11 landed on the moon on July 20, 1969 (source).

New York's Apollo Theater, named after the god of music himself, is one of the most famous music halls in the world.