I really like it when a Flex application doesn't look like a Flex application. To me that shows that the developers have really put time and effort into the site - they've customized nearly every component available to make sure that the look and feel of the site is perfect. Kizoa is a perfect example of a site that does just that. Its a French photo site, allowing you to edit your photos, share your photos, and organize your photos all in a single Flex based interface.

Its a bit like Picnik and Flickr and Mixbook all mixed into one site. You can easily upload your photos (the site supports multiple file uploads at once through their Flex interface - nice work!), then organize them into albums. You can create slideshows or montages easily, with support for text, transitions, animations and more. Once you've got something you're proud of, you can easily share it with the world, or just your friends. Their site has a few samples of slideshows that they've created.

The entire site is in French, so if you can't read French then you're probably out of luck, but if you do, this is a pretty neat site to check out.