The SlideShowPro tool is now available as a plugin for the web module of Adobe Lightroom.
The tool allows you to create Flash slideshows from your photo collections using just the familar Lightroom interface. Its all self contained and you don't need Flash installed on your machine to use it.
For more information check out the SlideShowPro website
That looks great - probably the most elegant slideshow I've seen - most are a bit tacky somehow. I'll have to look at this more closely - certainly seems cheap enough.