As far as I know, there are only two animation routines available for the animated models. Both are the same as far as the amount of movement. I'm not sure if there's a way to select no movement at all. If you want to see something amusing, go into the pilot section of a stock plane's aircraft.cfg and set both pilot animations the same, then spawn the plane and zoom in from external. You'll see both figures synchronized like they've been choreographed.