I'm intrigued by the Christmas special, actually, and all it's anachronisms. The Flintstones barely get away with it because the whole show is anachronism, but explainable due to the dinosaurs doing everything.
That said, I think Dinosaurs did the best job inventing a holiday with the biggest anachronism of them all, worshiping and invention that won't exist for even longer, even though (according to the show's logic) they all the sudden had discovered everything in one fell swoop. At least, the technical bits like Televisions. They weren't even up to not sacrificing their elders until the show started. Plus, that one hacked the holiday season to pieces and riffed on the commercial aspects harder than Charlie Brown ever did, AND tore apart Christmas special cliches.
That said, I think Dinosaurs did the best job inventing a holiday with the biggest anachronism of them all, worshiping and invention that won't exist for even longer, even though (according to the show's logic) they all the sudden had discovered everything in one fell swoop. At least, the technical bits like Televisions. They weren't even up to not sacrificing their elders until the show started. Plus, that one hacked the holiday season to pieces and riffed on the commercial aspects harder than Charlie Brown ever did, AND tore apart Christmas special cliches.