TaeKwonDo is good for us, I think. It's hard for me, though, because I know they are supposed to practice and yet I also know that part of the appeal of TKD (like school) is that it's not Daddy doing the teaching.
So far, the best thing I've found to do it to pretend I'm doing the exercises, too, incorrectly, and have the correct me. It's tricky, though, when they teach me the wrong way and I know it's wrong (because I do pay attention, thank you very much, even though I'd rather be reading). Oh, well.
And I randomly recite the creed in order to have him hear it in a calm way rather than shouted by twenty kids. Because we don't go to church the kids are only now learning how to mouth along with a group. Important life lessons, I'm sure.