Obama's nonverbals - gestures, expressions, postures - are definitely unique and definitely a a part of his appeal.
There is nothing threatening about his gestures - no fist banging, no hard finger pointing. They are carefully orchestrated. They are almost delicate. And very restrained. Like his "friendly face" as my international friends describe it, this is man who is centered, and invites you to join him.
This video talks about something called "finger healing" - maybe yes, maybe no, but it's a great look at the gestures and expressions of Obama.
To learn moe