For anyone who has generations is now possible to fix all the head movements! Type "moviemakercheatsenabled true" and then ctrl+shift+right click on your sims. Select "Turn Off Look Ats" and voilà, no more odd movements!
After a long time away from my game, I got all my stuff back ^^ and so I can release another animation pack ^^
to see how animations work, watch here:
To make this animation work, use animation player, slowmotionviz 6, use moveobjects on and put your sims in the right pose.
(And don't claim as your own!)