Judging from Google's data, some sports events stir interest almost everywhere: the Tour de France, Wimbledon, the Melbourne Cup horse race and the World Series were all among the top 10 sports-related searches last year. It also becomes obvious just how familiar American movies, music and celebrities are to searchers across the globe. Two years ago, a Google engineer named Lucas Pereira noticed that searches for Britney Spears had declined, indicating what he thought must be a decline in her popularity. From that observation grew Google Zeitgeist, a listing of the top gaining and declining queries of each week and month.