Ok, I just got a a Verizon FiOS DVR box and it shows up on my subnet with my home PCs, which I thought was interesting, since there is no ethernet cable connected to it, just standard RG-6 coaxial ...
Just got off the phone with Comcast adding a new TV package w/HD. Asked the guy about HDMI and was informed that Comast's non-DVR boxes, have HDMI but it "it will not work", only DVR boxes will work ...