The Twilight Zone

The first version: drifting grey cloud, Serling's 'fifth dimension' narration, and Bernard Herrmann's score rather than the theme the show is remembered for.

Reworked into a different abstraction, with a single point of light resolving out of the texture.

The one that became the shorthand for the whole show — the spiral, the shattering window, the eye and the door, cut to Marius Constant's two-guitar theme. Held for the last three seasons and quoted ever since.