The Hubs and A couldn’t be more opposite in that. 🙂 We don’t even have television service, we just use the TV for an occasional video game and we listen to music through our phones and a mini wireless speaker.

The backing is a brilliant idea! It would lower the contrast between the wall color and the shelf color too…

That shelf looks exactly like the Expedit from Ikea. I like that it’s been in such a versatile use. Since you don’t have much stuff which would hide those cables (if you want to hide them), you could attach a fabric or a wallpapered board on the back. That could look quite nice especially when most of the cubes are clear of stuff and wont make it look messy.