Walter Aldro Day Jr. is an American businessman and the founder of Twin Galaxies, an organization that tracks world records for video games and conducts a program of electronic-gaming promotions.

The King of Kong: A Fistful of Quarters is a 2007 American documentary film about competitive arcade gaming directed by Seth Gordon. It follows Steve Wiebe in his attempts to take the high score record for the 1981 arcade game Donkey Kong from Billy Mitchell. The film premiered at the 2007 Slamdance Film Festival and was released in U.S. theaters in August 2007. It received positive reviews.