Hunter Medney, one of our early adopter Workplace Designer folks, and talented programmer who built the Call Center sample app in both Workplace Designer and in the WCT Toolkit has written an article introducing the developer to Designer. His example is a slimmed down version of the call center sample he wrote, which includes lots of useful scripts for finding people's roles and working with the Workplace Documents api's. Check it out:
Introduction to application development with IBM Workplace Designer V2.6
The only nitpick I have is that we stopped calling "Workplace Builder" that name. Instead, it's just a feature of the platform where you edit templates - so, in the UI you won't see the term Workplace Builder, but will see "Templates" instead. Just goes to show you that once a name is introduced, it's really hard to "take it back".
Besides supporting Hannover, the next Designer will also deploy portlets to WebSphere Portal 6!
Sr. Product Manager, Workplace Designer