As if I didn’t have enough to do, I started a new wiki for the collection of information, patterns, and documentation about interactive gestures used in devices, kiosks, gaming, and environments. It’s called, appropriately enough, Interactive Gestures. It’s already started to fill up with some patterns, which is great. Please contribute!
I did not have the chance (yet) to have a glance at this wiki but have you already looked at gestural/movement annotations in areas such as dance.
Last year, I tried to dig the subject, see some thoughts here: http://liftlab.com/think/nova/2007/02/20/how-to-write-gestures-and-movements/