For an assignment I need to find some examples of non-verbal communication that have different meanings in different societies.

I have been having some difficulty but I have found out that thumbs up in some places (iran for one) is basically equivalent to giving someone the finger, and that in America doing what we call "the forks" (same as the peace sign but palm facing inwards) is just another version of "peace" but here is similar to giving someone the finger, ( I seem to be attracted to the finger for some reason) and I already knew from personal experience that aboriginal societies consider eye-contact with a non intimate person to be very rude or aggressive.

I would be very grateful if anyone could tell me any others, plus any sites that I can give as a source.

Cheers.