Impro: Improvisation and the Theatre (http://www.amazon.com/Impro-Improvisation-Theatre-Keith-Johnstone/dp/0878301178 http://www.amazon.com/Impro-Improvisation-

Impro: Improvisation and the Theatre (http://www.amazon.com/Impro-Improvisation-Theatre-Keith-Johnstone/dp/0878301178 http://www.amazon.com/Impro-Improvisation-Theatre-Keith-John...) has a great section on communicating status through body language and movement. It describes a number of exercises where one actor takes the role of a superior and the other an inferior. The techniques are quite effective for the intended audience. I would quote from it but I had a paper copy and it's really only worth running through once a decade for a non-actor interesting in the physical aspect of acting.