Polarbear, that is really interesting. I'm right-handed (well, I'd say around 70%, anyway) for small-motor stuff, and left side dominant for large motor (again, probably 65-70%).

Gymnastics, soccer, etc-- all left. Bought righty golf clubs, though, so I use those as a righty, which seems to work fine. Softball-- I thought I was terrible as a kid-- until I tried it as a lefty in grad school. Turns out I'm not SO awful.

Schrödinger's cat walks into a bar. And doesn't.