I watch a lot of anime (this is probably an understatement). Recently I watched Chobits by Clamp when I noticed some of the different camera angles. There were times when the main character was talking to some one and all you could see was their feet. The fascinating part was that although all you saw was the pairs of feet, you could still sense the emotion in how the characters were standing.
According to most findings the three major parts of communication are body language, tone of voice, and words.
- 55% of impact is determined by body language—postures, 
gestures, and eye contact,
- 38% by the tone of voice, and
- 7% by the content or the words
(Percentages taken from: wikipedia)
That being said, we can see that the majority of human communication is based on visual cues from the human body. Though you may not see a person’s face, you can understand the message they are sending just by their overall appearance. A couple holding hands conveys a close intimacy or love. Proximity in general is a good indication of intimacy. A couple standing or leaning towards one another is a sign they are intimate, however two people with a wide distance between them indicates unfamiliarity or disgust.