Cyboman 2

For a 64k intro from 1994, this is great. It features toruses, and even fish inside a torus. It also features morphing plasma-cubes. They morph into quite complex heads. There's some very good coding in this 64k. It's definately worth checking out. Also worth mentioning, this was the intro that really put Complex on everybody's lips, and Jmagic (the coder) were proclaimed god.