We have written a real sample application written with JSF + JPA +OWB. It is called "Hotel Reservation Application". You can create "Admin" and "Normal" user accounts. "Admin" is responsible for defining hotels etc, and user  creates a hotel reservation.
Altough it is a simple application, it uses and shows most of the functionality that are defined in the JSR-299, including Scope and Contexts, Interceptors,Decorators, Events and Observers etc.

STEPS TO RUN
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It is located in the trunk[1]/samples/reservation directory. In this directory

> mvn clean install -Pjetty --> to compile and install
> mvn jetty:run -Pjetty  --> to run the jetty container

Then, http://localhost:8080/reservation
Voila, enjoys it!

[1]http://svn.apache.org/repos/asf/incubator/openwebbeans/trunk/

OWB Team