I have been looking for an application that would manage large amounts of digital pictures, apply editing across selected images (e.g. color corrections), and export to a Flash slideshow. I think this could be a very good application for such a purpose though it is mainly geared to professional photographers. It is now available for pre-order at the Adobe store for $199, which is not too bad. I am likely to download the beta and tinker around with it. I hope my computer can handle it. I had a rude awakening that I could not install a trial version of Premiere Pro CS2.
Check it out at http://labs.adobe.com/technologies/lightroom