Taken from The Common Room, but I saw it at the Treehouse first.
bold the states you've been to, underline the states you've lived in and italicize the state you're in now...
Alabama / Alaska / Arizona / Arkansas / California / Colorado / Connecticut (?) / Delaware / Florida / Georgia / Hawaii / Idaho / Illinois / Indiana / Iowa / Kansas / Kentucky / Louisiana / Maine / Maryland ? / Massachusetts / Michigan* / Minnesota* / Mississippi / Missouri / Montana (?) / Nebraska / Nevada (?) / New Hampshire / New Jersey / New Mexico / New York / North Carolina / North Dakota / Ohio / Oklahoma / Oregon / Pennsylvania (?) / Rhode Island / South Carolina / South Dakota / Tennessee / Texas / Utah / Vermont (?) / Virginia / Washington / West Virginia / Wisconsin / Wyoming (?) / Washington D.C /
The asterisks represent transfers at the Detroit and Minneapolis airports, as I don't recall ever being elsewhere in the state. The question marks are states I think I've passed through on road trips but don't positively remember for sure.
I think I need to pay more attention. :-P