I get it. The GameCube was a cube. So you can show stuff happening inside a cube. It's an advertising brief that writes itself.
But for every awesome shot in this old Nintendo commercial - like samurai doing battle, or the world's only Tie Interceptor living in captivity - there's something silly. Unnecessary. A little much, considering the tone and target market for many of the games that would wind up on the console.
Still, being a failed attempt to be as "cool" as Sony, the commercial is useful as an example of just one of the many angles, messages and ideas that Nintendo got wrong during the GameCube's time