Not sure how much exactly this cost Firaxis, but the Governor of Maryland has named September 21st, 2010 to officially be Civilization 5 day. This date was not selected randomly, as that coincidentally happens to be the release date announced by 2K Games. To be fair, Firaxis and Sid Meyer are both from Maryland, and the Civilization series has been considered to be educational from a historical standpoint. So congrats Sid and Firaxis, that is quite an honor.
[via Gamasutra]