See Wikipedia: "The head bobble, head wobble, or Indian head shake refers to a common gesture found in South Asian cultures, most notably in India. This form of nonverbal communication is sometimes referred to as 'Indian head shake' [...] It is often performed by the listener in agreement with what is being said by the speaker, such that the speaker perceives there is 'no problem' with the message currently being conveyed. In India the gesture is common in the southern parts, but may not be used consistently all around the country."

Well, Peter, Anish is not Indian but his father is from Nepal which is very close, so probably this comes from him, but Anish definitely has the Indian head nod thing, which I've always found pretty nice.
I'm talking about this one: http://youtu.be/uRWu8cy2s0E

He also lived in Japan for many years.

The thing is, I knew the gesture and felt the urge to explain it. I mean, shrugging your shoulders won't be universal either. What struck me is that, as far as I know, Anish never lived in Nepal, so he could only have inherited this from his father, which would have been remarkable. Only then I viewed the video and to my surprise, I never saw it happen, at least not the real thing. So maybe Kcuf and Janis Nisii just see something they expected to see...
Now I hope at least this comment won't lead to any overheated reactions, because, although I can stand a little 'heat in the kitchen', taking part in discussions here isn't as fun anymore as it used to be. The dishes from this kitchen are getting a bit sour and burned, lately.