Natural Earth is an online map dataset organized by Nathaniel Kelso of the Washington Post and Tom Patterson, a cartographer working with the U.S. National Park Service. The dataset is consistently updated, modified, and corrected by collaborators worldwide (many of which happen to be members of the North American Cartographic Information Society). GIS and cartographic data can be downloaded at a variety of scales in both raster and vector formats. All map data are free and in the public domain.
So… GO CRAZY!
Tags: free data, GIS, linkedin, Natural Earth