It goes to show you that CDI and JAX-RS are simple enough in combination to use in a live high stress demo environment. Imagine what it could do for you in your code. This code was written using NetBeans 7 IDE which may be responsible for the simplicity as much as the other technologies.
Here is the source code: cdi-example.zip
The code below demonstrates some interesting bits. The source code above contains the less interesting POJOs.