Regulus

Revealing mistake: At the beginning of the movie, Talua is depicted as an isolated island in the South Pacific. Several shots show other islands in the movie. Many segments were shot in Hawaii (Maui) and you could see the Island of Hawaii in the distance.

Regulus

Revealing mistake: When the tsunami hits New York City the waves only move toward the camera, leaving the street in the background high and dry. (00:44:25)

Regulus

Revealing mistake: On the maiden flight of the X-15, the B-52 that carries it to launch position has several silhouettes of the X-15 painted on it, obviously one for every time it carried the X-15 for a mission. Clearly the real B-52 they used for X-15 launches and they didn't account for the fact that this was meant to be the first. (00:48:50 - 00:50:05)

Regulus

Revealing mistake: Just before the battle between King Arthur's men and Sir Mordred's men, Trimble Tom escapes from Sir Mordred's encampment in a rocket-powered chair. As he approaches King Arthur's Castle you can see the wires supporting the chair. (01:15:45)

Regulus

Revealing mistake: When the prisoners commandeer the balloon and proceed to take flight, you can see a television antenna on one of the buildings in the background. (00:07:20 - 00:08:00)

Regulus