It seems that Apple TV provides a way to get video from the Mac (through Airport Extreme) to the TV input, but I am looking at a different application. I have a spare iMac that I want to use as a 24" TV in another room - not in the room with my DVR. Is there a simple way to take the HDMI out from my DirecTV DVR and wirelessly run it to my remoted iMac? I have the iMac connected to an Airport Extreme, so I have wireless in my home. It would be nice if there were a small box that would take the DVR HDMI output and connect to the remoted iMac through my Airport Extreme. Is this difficult, or worse . . . not possible?