Dick Van Dyke is 100 tomorrow. That’s no big deal -- in my world. Last month, my klezmer band played a 100th birthday party -- our fourth in three years. There was a chair placed prominently in the middle of the dance floor, to lift the birthday “girl” for “Hava Nagila.”

I said to myself, “No way.”

Correct: No way. We did not lift the celebrant on a chair. But the birthday “girl,” Etty Hoffman of Beachwood, did dance. She was out there on the dance floor. She boogied. And she gave a moving speech afterward, touching on more than five generations of her family, including “mommy and daddy.”

Nearly 10,000 Americans turn 100 each year, according to the Pew Research Center. The United States has the second-most number of centenarians in the world. Japan is first.

After the hora, I asked a d

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