This isn't as cool, detailed, or information-rich as ps's visited counties map, but I went ahead and generated a visited states map just to check up on my progress. The influence of a southerly cross-country trip is obvious, and will hopefully be fixed sometime in the future. My criteria for filling in a state was that I had to have at least driven in the state -- airport layovers don't count -- but even that is fairly loose criteria.

create your own visited states map