Bay seniors can check out Bay Area residents who can’t keep their feet still on Sunday August 18 at the Herbst Theater in San Francisco. It’s tapdance madness, an evening of leading tappers, part of the 10th Anniversary of the Bay Area Tap Festival. $18 a ticket for the concert. Dance fever is infectious and should you contract it, there are schools all over the Bay Area ready to encourage your inner terpsichore. Dance Brigade in the Mission offers everything from ballet to Bollywood line dancing. Or stay at home and dance along to your Zumba DVD.