Revising the Denon/Onkyo plugin specifically for the Onkyo 875 receiver (includes all of the possible RS232 commands for this receiver including Zone 3). I have the latest RS232 protocols from Onkyo.
DirecTV HR20 HD PVR (RS232)
Lutron Homeworks home automation series 4 and series 8 processor (TCP/IP or RS232).
Honeywell Environcon Heating/AC thermostats (RS232)
There is also a security system PVR I will be working on a plugin for but I don't have that PVR or it's specs on hand yet.
Remote/Controller is the IPhone using the eventghost webserver. I'm particularly interested in returning information from some of these systems back to the iphone (HVAC, Security and Lutron Homeworks systems) for display.