Once a week or so? But I do have three households to ring, which makes life more complicated. Most of our communication is done via email, and that tends to come in fits and bursts, but again probably once a week for that too.
My mom tries and calls once a week and sometimes I will call her if I need to talk. My dad and I email almost everyday and he calls on special holidays.
It's a shame some of you complain about living at home...haha you will miss it a bit once you move out, trust me. Not preaching or anything, just wish you would enjoy it while it lasts
Maybe once a month? My dad usually wants something random from me once a month, and if they go out for a bit to eat local I coincidentally manage to ring them around half an hour before they leave. Well, if they don;t on a Wednesday, they do on a Friday and as it IS just down the road...