A Taxonomy of City Blocks:
...the city on map A is deconstructed, its blocks are classified for size and shape, then reassembled in rows, arranged by type, on map B.
http://bigthink.com/ideas/30868

Chinese Provinces Compared to Countries with Similar GDPs:
...comparing Chinese provinces to countries with a similar GDP.
http://www.economist.com/content/all_parities_china
US states version: http://www.economist.com/blogs/dailychart/2011/01/comparing_us_states_countries

Nazis Up the Mississippi, And Other Axis Invasion Scenarios:
So confident are the Nazis of the war's outcome that they've declared war on the US...
http://bigthink.com/ideas/26571