Google Zeitgeist reviews the most popular search terms of 2010. You can pick a country and see the most popular searches by month and the most searched personalities (some muppet named Justin Bieber tops most of the lists.) For the United States you can choose a city and see the most popular searches (university web mail servers are huge.)
Of course the best part is the interactive map.
You see how frequently some of the major stories of the year were queried by month with bar charts for each country. You can also play an animation for the entire year and compare up to three stories.
Also, you can choose a subject or person and get a map showing interest by state. Here is the Justin Bieber popularity map. Pardon the hideous plate carree (or something similar) projection. Happy New Year Justin-Virginia loves you!
11 years ago