Liking an interface

An interface must match its context of use and there are a lot of specifications (e.g. Agency, Texture, Opacity, Reflexivity) that result in a usable UI. There is an additional ingredient needed to make a usable interface into a likeable one, and this is about adding a "daring" element into the mix; something that draws your attention, something that evolves when using it, something that provides relevance, something that grasps more than one of your senses. For me, the interface that I most appreciate, is the one that is there without me experiencing it as an "extra layer"; it needs to be seamless, guiding and intuitive.