I may have cheated a bit on South Carolina, Idaho, Oregon, Kansas and Ohio since I've only driven through them and not actually spent any time there. (Technically I was on the train not driving when in Kansas, and I did actually sleep there -- while on the train). I will add Mass. to the list by the end of the year (after SMOFcon in December)
I may have also cheated here with regards to New Zealand since it was just a stop over on the flight to Australia. In a month, I'll be able to add Germany by nearly the same cheat.