This is a related tangent that I'd like some input on: One of the characteristics of "bad management" that's shown here is Dick constantly hovering. At my company, we've arranged the cubicles so that they still offer privacy (walls are about 6 feet high), but that anyone walking by can see what's on the computer screen. Would you qualify this as hovering? We generally have no issues with casual gchatting, facebooking…
I'm not sure about that 45 degree guy, but for turning your cube so that you face out, that's sort of natural. For some people (me...) sitting with your back to a door or an area where people are generally walking is really uncomfortable. I don't like having people behind me without knowing they're there. It's not about slacking, it's just about comfort.
I can't speak for all the deaf people out there, but personally, I find it uncomfortable to leave my hearing aid in all day, which means I'll often remove it if I'm just working at my desk, and won't hear someone come up behind me.
My last job had an environment where everyone had their backs to the entrance of their cube and I would constantly be startled by people walking up behind me without me hearing or seeing that they were there. It's very unpleasant and actually started making me a little neurotic. It didn't help that the floor in that office was kind of shaky, so you'd also feel it whenever someone walked by.
My current job still has cubes, but the desks aren't attached to the cube walls (we mostly use IKEA Galants) and pretty much everyone has their cube set up so they face out. It's a much more pleasant environment to work in, and since we work in a converted factory it means I look up to a fantastic view of downtown Akron through a bank of windows. I'm much less neurotic now (at least about this... ;)) and all the natural light has actually done a lot to help my sleeping patterns, too.