Have a few minutes to spare? Take a look at Flickrvision, an ingenious web application that marries Google Maps with recently uploaded photos to Flickr. It zooms all over the world and shows you the new photos, as well as points you to where they were uploaded from!
I must warn you - flickrvision is very addictive. When I first looked at this site, I stayed for over half an hour just looking at the new photos and where they were taken. But definitely take a look!