My most recent application of which I am unduly proud is a dispatch
system for a bus service.
All significant user interface is through TListViews and TListItems.
This gave me drag and drop events in Firebird gave me a way to refresh
in the background.
Firebird gave me the the ability to put some quite complex financial
calculations inside the database - and after some sweat I got their
times down to seconds.
I'm a long time Paradox and Delphi+BDE and I couldn't go back to them.
Mick