I did a couple of go-rounds with Music Together, and was about always the only dad. It was kind of freaky, and I really couldn't bring myself to sing "Wiggle, wiggle, wiggle," but I thought our twins were getting some kicks out of it, so I just sucked it up.
Now I take them to soccer and "jumping" (gymnastics) at Chelsea Piers ... though after months of trying to encourage my sulking son, I gave up and put them together in gymnastics this winter, and we're all much happier.
Also take them to the Central Park Zoo on occasion or to the local park. A couple of times a week I hoist them over the Brooklyn Bridge or to Prospect Park and Coney Island (they still talk about the Underwheel) in the bike trailer when the weather's good.
Even have taken them to the pool hall a few times during the day when it's quiet, but they've gotten too wild now, and I feel like they're getting cheated out of attention from me, while I can forget about actually focusing on my struggling game while they run around playing horsey with cue sticks.
But it's true, that like most other dads, I rarely end up in a big chat while making the rounds.