I have never seen anything like FlashDen (besides AudioJungle and the upcoming ThemeForest)! The quality of the Flash files is exceptional! Everyone should really take a look – that is one successful website/network (Envato).
Here are some of the files that I personally like:
All of these Flash files are really easy to use and see how they are made! They give you directions for everything you need to set them up for your real-life projects.
XML Galleries – XML means that you can create a “special” list of images and the galleries will use those images:
Advanced XML Gallery
XML Grid Gallery
2 Level XML Gallery
XML Gallery with Floating Thumbnails
Check it out, they are available at a good price, also!