Very similar to the Flight Patterns video I posted back in October 2007, this is a video showing all commercial flight in the world over a 24-hour period.  The previous video was only the U.S., but this one shows the entire world.  It also shows the day/night areas and you can see the increase in air traffic as dawn rises around the world.  Its from the Zhaw School of Engineering in Zurich.

Found via FlowingData.com