GE has posted a searchable bird's-eye view of the 6,000 most popular airports in the world.
A 24 hour observation of all of the large aircraft flights in the world, condensed down to just over a minute. Similar videos are created by NASA's Future ATM Concepts Evaluation Tool (or FACET), like this one of a day in the life of air traffic over the United States.
An interactive map of J.R.R. Tolkien’s Middle-earth. You can zoom and pan, search for or center a location, and link to a particular area. Place names are labeled in both English and Elvish. [more inside]