"Thus iPhoto Extractor was born. It's function is simple, traverse the iPhoto library structure, copying the target files into a sorted destination. This way you can import all or some of your files back into iPhoto and not worry about thumbnails and other files you would have to manage manually.
"The download package has 2 files. An AppleScript droplet that you can run in any version of the Mac OS (9->10.2.x) and a "Pro" version that is a Mac OS X application that runs in Mac OS X 10.3.x or higher. Check out the READ ME for more information on which to use and why."