Street-performing techno dancers in Zagreb, Croatia were upstaged when a woman of a certain age joined in from the crowd. From there, she quickly proved that age really is just a number.

In fact, the woman, nicknamed "Techno Granny," and her moves were so strong, she now has her own Facebook page.

This is  just the latest example of a geriatric getting down in the presence of a video camera.  Read on for a whole bunch of seniors who prove that there is more to get old than eating fiber and knitting.

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