I came across this hilarious web site that has charts of bizarre "correlations" between disparate categories. Results like this:
In the spirit of my summer solstice shedding spuriously earned rep. campaign, I pose the challenge of creating a small app. using Mathematica and its built-in data sources (and optionally use of external non-Wolram web data resources) to allow the user to select from various categories of data and have spurious correlations discovered and plotted in a similar fashion.
I'll be adding a 500 rep. points bounty as soon as the system allows, to be awarded either automagically by the system to the highest voted response, or picked by me.
Let the games begin...