The Jetsons Meet the Flintstones
When the time machine activates, George appears to be saying "Three... two... one..." but no sound is coming out of him.
Fred and Barney's cup of coconut juice disappears.
When Fred is in the Hot Coal race with Turk Tarpit, Fred's Clothes turn into Barney's clothes for a second.
When Astro steps on a stick in Bedrock he was walking on grass, but in the next shot, he is walking on dirt.
Elroy says he has it set for future, but a closeup of the time machine's switch shows it set to PAST. A later shot shows the switch falling from the Future position to Past.
When Judy is taking a shower at the Flintstones house, she turns the shower on with a bone in her hair, but when the elephant comes, her black bow suddenly appears.
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