Metaphors for interface design

Over the last few years, user experience has become my primary focus when building processes and systems. But, I never truly understood the importance of interface design until I read this post by Andy Rutledge.

Andy intelligently draws a metaphor where words represent content (what you are saying) and body language represents interface design (how you look as you say it). He also beautifully illustrates that a huge component of all communication is non-verbal, although it is less than the sensationalist 93% that people inaccurately extrapolate from Mehrabian's communication study.

What is your interface design saying?