Answering the call for showcases , Steffen Binas prepared a very nice set of screenshots for AquaSoft ‘s Slide Show impressive product, which went far beyond the minimal requirement, so I’m posting a full-blown article about it. Following is the presentation of their software and how DWScript  is used inside it.
When you need a powerful showcase I’d bet AquaSoft SlideShow is the one: http://www.aquasoft.de/diashow
Despite the simple name of the application it’s very powerful, just have look at the trailer video created completely with it .
The scripting system is intended to be used mainly by the developers and preset designers but we provide all the tools users too.
Our Interface based API can be found here (German only): http://wiki.aquasoft.de/wiki/index.php/Dokumentation_der_Scripting-API 
How scripting is used:
- build intelligent presets which generate parts of the slideshow out of more complex templates.
- generate basic GUI for presets (e.g. Animated Path)
- allow execution of HLSL shaders, build their GUI and calculate their parameters
- generate context menu entries for SlideShowObjects
- manipulate bitmaps
Another product is AquaSoft WebShow 4 which is a tool to create web galleries out of photos and videos. DWScript is used here in its original manner using the HTML Filter to mix pascal code with html. Later we used more and more an HTMLBuilder class with fluent interface written completely in DWScript to avoid the html fragments mixed in the templates.
The templates are created object orientated and use inheritance. DWScript was a replacement for an own scripting language which was used in earlier versions. WebShow 4 is unfortunatelly not completely ready yet as it only has three templates included but is already public as the web wizard shipped together with AquaSoft SlideShow 8.