In line with the "nudge" thesis, I am a strong believer in the use of innovative data representation techniques as decision support tools for officials at various levels. Apart from their functional utility (for example, a 'GIS map' gives the impersonal numbers a more easily identifiable geographic identity, and a 'heat map' is much more effective in illustrating the intensity of the activity being studied), they also have a pronounced cognitive impact on its audience.
The newest version of such maps comes in the form of this superb representation of various types of crimes in San Francisco in 2009 as laid out on the city map.
The height of the peaks in the graphic is a measure of the intensity of the particular type of crime in that area. This most easily identifiable and ready-to-use data representation can help channelize focus (especially in those at the cutting-edge level) on activities that can prevent these crimes. Imagine the cognitive impact of similar data representation that highlights the tenth class performance or learning outcomes in their respective areas among school supervisors. Statistics combined with maps is a very powerful nudge!