* HeyItsThatSound: The sound effect of the [[https://www.youtube.com/watch?v=QUY1KYEABz0 green disintegrator rays]] would later be reused for the [[https://www.youtube.com/watch?v=34FsrucOOBY photon torpedoes firing]] in ''Series/StarTrekTheOriginalSeries''.
* WhatCouldHaveBeen: Ray Harryhausen apparently always wanted to take on the story, but never got the chance to do so.