heya; you're running into the animation spline problem. in the animation palette, look for the four buttons with lines, like a curvy s line, and a jaggy triangle line... select your keyframes and press the jaggy triangle line. that makes the segments linear (not spline) animated. the splines tend to snake through keyframes, and go past your most extreme pose/setting before they turn and go towards the next keyframe. er, is that making any sense?? :)