I saw this on boingboing one day and was inspired.  It's a time lapse video of ships going through the locks at the Panama Canal.

 One of my coworkers wrote a C++ library that made it easy for me to write a program that would wake up every minute and go grab the webcam image from the same camera.  I let it run for a week in the background on my PC and assembled the jpegs into a time lapse video myself.  And voila!  A weeks worth of activity compressed into a 10 minute video.  Very cool. 

Now if only I could figure out how to shrink it down to a size suitable for download so that I could share it.  Compared to the googlevideo version, mine is sharper and the colors are better.  I guess that's what compression does to you – you lose sharpness.