Nice - usually when i'm editing I tend to lean away from cloning things out - leaning more towards creative level/color/masking adjustments. Thinking more about the photo, though - I wonder what it would do to the picture if I had put a tight spotlight on the outlet itself, sized/shaped to prevent much in the way of spill onto the wall around it.

(I won't even go into the whole edit vs. no editing debate that's going on in some photo communities - though, for me it usually boils down to just a lack of time)