Thanks guys. The computer and TV sounds good. But I'd just like to watch any 2 football games at once, like I did on my 2-tuner 2001 Sony XBR450 CRT, albeit not in HD.
On my 2008 Samsung I've split the cable before the box and, at best, can watch any channel in the main window, using cable box and HDMI, and watch local broadcast channels in the PIP window, using the internal tuner and straight coax. No simultaneous ESPN and ESPN2 for me, since Comcast encrypted even SD cable channels on the coax.
Even if a TV did allow 2 HDMI inputs, I'd need 2 cable boxes, anyway. Then I might as well set up an adjacent set. That's it. I'll run it by my wife.