More information = facial pores, really. Maybe some edges are softer, but otherwise it’s just pores for days.
For me seeing the facial pores and textures has always been the most important and impressive things about HD.
When I get a movie and am trying to asses the quality/resolution, I always look for a medium close-up shot and look at how well-defined the skin-pores are.
Hmm. “Asses” seems a strangely appropriate typo… we know the movies you watch, Harmy…