[We'll leave ecclesiology behind for now in order to look at another topic of interest.]
Here's a site that provides comparative statistics about the world's demographics (it's more interesting than the way I just worded the description!): www.miniature-earth.com. The Flash presentation is maybe 5 minutes long.
In a similar vein, globalrichlist.com will show you where you rank among the world's richest people. You may be surprised, especially when you see your percentile. Of course, we have a high cost of living here in the "first world," but still . . .