Check out this awesome winner of the Google Data Visualization Challenge (http://www.datavizchallenge.org/)
via The Economist
EDIT: Honorable mention - the glass half full award went to this great tool that determines what tax dollars actually went to things you like supporting: http://www.meghantosh.com/datavizchallenge/
Great interactive on the best companies to work for - zoom in to each company and key area for more details and quotes from employees.
Great article via PeteSearch via FlowingData