Kinesics

Kinesics is the interpretation of body language such as facial expressions, eye contact, gestures or more formally, non-verbal behavior related to movement. "Desmond Morris (1979) wrote that communication depends heavily on the actions, postures, movements, and expressions of our body"(pg.113). This nonverbal form of communication can be expressed intentionally or unconsciously. 

As in the picture to the left you can see gestures that can be interpreted as happy, mad, confused, and or unsure.  

The picture with George Bush show a gesture of boredom.

On the bottom, the gentleman expresses his feelings with body movement of his fist. 

There are variable universal signs such as, thumbs-up, middle finger, peace sign, and the OK sign. I have used all these signs to express myself with hand movement. Also, a wink, a hard stare, smile, are facial gestures that I used to show humor, anger, happiness, and attractiveness. This are all some common Kinesics used here in US, but can mean something differently some were else.