Flintstones in Viva Rock Vegas (2000)

Continuity mistake: In the beginning of the movie when the letters of "Univershell" rotate around the Universal-logo globe, Earth is pictured as preglacial one-continent planet. When it's pictured as a background looking from out of the UFO it's the regular spaceview of Earth.

Continuity mistake: In the 1st movie Fred says he met Wilma when he won an eating contest and she cleaned him off, but in this film we see he met her at a fast food restaurant and she originally dated Barney.

Continuity mistake: When Gazoo crash-lands his flying saucer, the top portion of his helmet and his antenna are shown to serve as the roof of the spacecraft. This is what Fred grips to try and open the saucer. While attached to the saucer, the top of the helmet is completely smooth except for the antenna sticking up. However, once Fred has loosed Gazoo from the ship, Gazoo's helmet now has a prominent ridge running the entire length of the helmet from front to back. This ridge should have been, but wasn't visible while Gazoo was still in the ship.

Trivia: Harvey Korman who played the part of Wilma's father in this movie is also the voice of the Dictabird in the first Flintstones movie.

Trivia: William Hanna and Joseph Barbera, creators of the Flintstones cartoon series, can be seen during the wedding of Fred and Wilma towards the end of the movie. There is a brief shot of them together singing along to the Flintstones theme song.

Trivia: Harvey Korman also did the voice of The Great Gazoo, as well as several other minor characters in the original animated TV show The Flintstones.

Fred Flintstone: Hey, was that an insult?
Gazoo: Well, if the shoe fits.
Barney Rubble: What's a shoe?
Gazoo: Than I guess it was an insult.

Barney Rubble: Cranes got trouble, just call Barney Rubble.

Fred Flintstone: Your eyes are like two big blue eyes.