I wink'ed a demo on Jopr's content subsystem (shows installing Fedora patches (via yum) and installing JBoss EAP cumulative patches).

http://support.rhq-project.org/display/RHQ/Jopr+2.2+-+Content+Demo

The content subsystem is the least talked about subsystem in all of Jopr I think. It isn't used much I guess but the framework we have right now is pretty powerful and can be used to do some pretty cool stuff - it only needs a few more plugins to use it to show it off.

I wrote a blog on this - it has an architectural diagram of the basic content subsystem, too:

http://management-platform.blogspot.com/2009/04/applying-patches-updates-and-other.html