For the past 18 months I have been working on a large scale project for a company in Sydney, Australia (TIAS), Cocoon is the primary framework we are using in development, although we are venturing more and more into the Avalon Framework (components mostly).
We using Cocoon Forms (Woody) and flow for our front end presentation.
We have written a number of our own components, generators, transformers and validators.
We have begun implementing OJB as our Object Relational Mapping tool.
It's great to be involved in this rapidly maturing tool.