I documented the design and construction of this over in the design forum, but I took some pictures after hooking everything up so I thought I'd start a new thread so the completed pictures aren't buried at the bottom if someone is search for ideas later.
Wiring up the electronics was so much easier than our old entertainment center. I was able to reach everything and just plug it in. Of course there's still a tangle behind the with all the wiring that goes to the wall (power, antenna, 2 satellite TV connections, rear speaker connections, phone, ethernet, subwoofer, and connections for future whole-house audio.) The fact that the bottom of the back is open allowed the excess to slip underneath thought so its somewhat hidden even if you look back there.
We were going to mount the TV on the wall above it, but I'm pretty happy with the way it looks now and there's no need to come up with a way to hide all the cabling to the TV.
Now I can go back to working on my daughter's vanity. And building some kind of storage cabinet for the games, VHS tapes, photo albums, etc that were stored in our old entertainment center. And restoring a couple old machines waiting in the wings. And...