So 1 new Bitcoin = 0.001 old Bitcoins = $0.3
I think I'd like that more than just starting naming them something else all of the sudden, and call them Satoshis or whatever, and then when the Bitcoin reaches $10,000 we'll probably have to use new names yet again.
Cutting the zeros could be a little confusing at first, but I think less confusing than starting talking about Satoshis, or mCoins or whatever, all of the sudden.