Little-known fact: The 'Dawn of Man' opening sequence in 2001 cuts away seconds before the Flintstones theme becomes recognizable.

"Stories of the Past and Future", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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Little-known fact: The 'Dawn of Man' opening sequence in 2001 cuts away seconds before the Flintstones theme becomes recognizable.