Want to see a map of computer virus detection rates all over the world? F-Secure put one online last week. This is kind of neat because you can get a broad overview or drill into continent and country to see which where the most trouble is. The data isn't exactly realtime, but it does let's you look at what happened over the last hour. The data is based on F-Secure's own information collection so keep that mind when you look at the map.
The publically available "F-Secure World Map" is similar to what F-Secure uses internally. For a better view of their internal system check the photos here -- really slick looking stuff!