Now this I really do like
The inclusion of a range of expressive gestures will really help bring the characters to life, I\'m really glad you plan to give the models more than the usual number of movements.
I love the idea already mentioned of bowing etc (and the obvious equivalent gesture for the ladies

) - it all sounds very civilised
To contrast this perhaps an unfriendly/aggressive taunt would be of use too

Different races could have different styles of movements perhaps, as would befit their racial characteristics.