1986 Interview with Shigeru Miyamoto and Masanobu Endo
One year after the release of Super Mario Bros., and just five after Donkey Kong. SMB was the game that showed the world that Miyamoto was a game design superstar. Endo designed Tower of Druaga and Xevious for Namco, two games that are still fairly unknown in the U.S. but were extraordinarily influential in Japan.
The full interview was translated by the (looks at thesarus) always magnificent Shmuplations, and is up on their site.