On Wikipedia, there are constant edits by people around the world. You can poke your head in on the live recent edits via the IRC feed from Wikimedia. Stephen LaPorte and Mahmoud Hashemi are scraping the anonymous edits, which include IP addresses (which can be easily mapped to location), and naturally, you can see them pop up on a map.
Map of live Wikipedia changes
Projects by Nathan Yau See All →
Why People Visit the Emergency Room
These are the top 250 products that people injure themselves on or with in a year.
Where to Find Jeopardy! Daily Doubles
Placement of Daily Double clues, from season 1 to 31. Watch them play out.