You could cover it with a fake "rock". I've seen them in the SkyMall catalog, and I'm sure there are lots of other home improvement sites and catalogs that carry them. There are several sizes and styles of "rock" covers. Check with Time Warner Cable, though, to see if they'll allow you to completely conceal their box.
Another trick is to make a planting garden surrounding the box, using a bit of decorative fencing and some low shrubs that conceal the box. You could choose flowering perennial plants that do well in your area.
It's a great opportunity to change an eyesore into eye candy!