HOLY SMOKES!! You guys didn't say HD tv was THIS good!
DirectTV was installed today, many thanks to the supervision of my main man, AverageJoe. It looks like we'll have to learn a new channel lineup and the new, sort of goofy, not completely bug-free remotes...but it is worth every little thing I can find to whine about. 720P is so much better than SD. The screen door effect is gone, except on (some) SD channels (like the non-HD Sci-Fi channel which may be the worst).
We got one of the brand new HD-DVR BLACK receivers that have the nifty blue circular chase lights in the center. I was fearing the look of the silver receiver in my all black equipment setup...not anymore!
Many thanks to everyone for your encouragement and continuing information assistance.