I Yabba-Dabba Do!

Unlike most cartoon characters, Pebbles Flintstone and Bamm-Bamm Rubble got to age with subsequent appearances; born and adopted respectively during the original series, and stars of their own spinoff (one of several) in the 1970s, the redhead and the hunk have reached adulthood by the time of "I Yabba-Dabba Do!"

Just as "The Flintstones" was a standard sitcom in animated form, so this TV movie is a standard comedic example of it; Pebbles and Bamm-Bamm are finally about to get married, but Fred doesn't want this to happen on account of his not being able to pay for it (he lost the Flintstone nest-egg gambling)... cue mildly amusing shenanigans, a subplot about gangsters that combined with a climax in Rock Vegas brings the film dangerously close to "Sister Act" territory, a bit too much gooeyness, and a horrible title song. (Hearing the aging voice of Jean Vanderpyl [the only one of the original core cast still alive at the time of production] as Wilma Flintstone is additionally depressing.) Still, it passes the time easily enough, and it certainly beats those Bedrock Cops cartoons.

(Note to "Will & Grace" fans: Megan Mullally supplies the voice of Pebbles. High-pitched even then.)