The U.S. Census Bureau made a March Madness-style tournament bracket for the populations of the 64 largest American cities (actually, their "metro areas," which is a little different). It's a tournament that New York always wins, but what counts in this tournament is your score at picking the winners of each matchup. I scored 49 out of 63 in my first attempt, but each time you play again, the matchups are different. And you'll learn along the way -I mean really, who expected Louisville to be bigger than Cleveland? When you've played the cities enough, you can switch the bracket to U.S. states and play again! Only a portion of the bracket is shown here. Link -via Metafilter