The Flintstones in Viva Rock Vegas

The Flintstones in Viva Rock Vegas is a 2000 family-romantic comedy film and prequel to 1994's The Flintstones based on the hit cartoon series of the same name, produced by Amblin Entertainment and Hanna-Barbera and distributed by Universal Pictures. Set before the Flintstones and Rubbles were married and had kids and the events of the first film, it provided very few of the original cast. Like the original film, Viva Rock Vegas received mostly negative reviews from critics, but bombed at the box office unlike its predecessor.

Ann-Margret, whose appearance as 'Ann-Margrock' is one of the most fondly remembered moments in the original television series, sings the theme song, which is a slightly rewritten version of the theme song from Viva Las Vegas, in which Ann-Margret co-starred with Elvis Presley.