Trivia / The Beast from 20,000 Fathoms

• Blooper: The same extra who played the cop who just got eaten is glimpsed again among the cops using shotguns.
• Colbert Bump: Courtesy of Whose Line Is It Anyway?, with a game of "Newsflash" having Colin Mochrie as an Intrepid Reporter, over a green screen showing footage of the Rhedosaurus attacking New York.
• Completely Different Title:
  • Austria: Panic in New York
  • Belgium and Portugal: The Monster of Lost Times
  • Brazil: The Sea Monster
  • Chile and Spain: The Monster of Ancient Times
  • Denmark: The Giant Lizard in New York
  • Finland: The Monster of the Depths
  • Germany: Dinosaur in New York
  • Greece: The Beast from the Beyond
  • Italy: The Awakening of the Dinosaur
  • Japan: Atomic Monster Appears (Not that one)
  • Norway: The Monster of the Past
  • Sweden: The Horror Lizard
  • Turkey: Giants
• Follow the Leader: This was the first movie where the atom bomb was responsible for the existence of the monster. It was followed by Them!, The Deadly Mantis, Earth vs. the Spider, and, most famously, Godzilla (1954). Rumor has it that Ray Bradbury was not pleased by this at all.

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