BEA's New Online Economic Mapping Service

Here is a good tool that was just introduced by the US Bureau of Economic Analysis.

You can generate your own analytical maps interactively using the online mapping application for gross state product (GSP). This interactive mapping application creates maps (and associated data tables) showing a number of analytical statistics, including Industry Specialization Indexes, state share of national output, and annual growth for GSP and its components (employee compensation, gross operating surplus, and taxes on production and imports).