Again reusing the same core ActionScript I developed for the Amex "My Vacation" websites, I was able to quickly put together an animated Flash movie that not only looked fun, but also loaded all of its text data dynamically, even displaying a different name based on a UID in the URL.
The data for this Flash movie was stored in XML, and a custom internally-developed XPATH / XSLT library was used to handle selection and transformation of content. All fonts were loaded dynamically, and flash text was styled with CSS. I was also responsible for all the animations and audio editing.
(There's a link to check out the XML datafile at the end of the Flash movie)