AR.Pan & AR.Drone SDK Resource (Shared by Eric)

AR.Pan

Here is a technical write-up from someone who programmed the drone to take panoramic photos.  He includes the source code and links to some software that may be useful:

http://mattkeeter.com/projects/arpan/technical.html

AR. Drone SDK Resource
 
Here is a list of files and their source codes that appear in an older version of the SDK.  It has superior search functionality compared to projects.ardrone.org and allows you to easily search all files for functions and methods and see where they are declared.  You can also click on most functions/data types within the source codes to see where they are defined:

http://mediabox.grasp.upenn.edu/roswiki/doc/api/ardrone_brown/html/globals.html