Well for me and my husband, we tend to talk about garden and flower, kids, my job, people whom I meet during route, animals, weather, health issues, cookings, family, political issues, daily events around the community.
With my girlfriends, each one are different. We tend to talk about anything, problems with kids, husbands, work, shoppings, color of hair ( remmy we getting grey hair), religious, clothes, foods, health issues. some of them we discuss world events alike war in Iraq, doemstic law, etc... I think I am too much for them.
For me and my boys, not easy cuz they are into man's world have no interest in me esp about cars, their works, etc except their relationship with their girlfriends. Of course my husband love it every min of it, talk man stuffs with them.