Me too, please! A clearer explanation of the different interpolations (spline, linear, constant, and break spline), what each one does and under what conditions you would use each one. Also why after saving an animation as a pose and reloading it, figures sometimes go crazy. And when to use the hip to move/when to use body to move and why. And how to effect changes to a part several frames at a time (Importing some bvh's has resulted in one part being all messed up throughout). And Retime Animation and Resample Keyframes. What are they for? I've tried 'em both and nothing seems to happen. And what the heck is Quaternion Interpolation and what does it do? I know it sometimes straightens out those bodies but the manual says "use it as a last resort." Why? I've read about all these issues in both the manual and Mr Schrand's book several times and am still confused. Adding audio would be nice, too. Have this on my desk in the morning, thanks. Kidding of course. Thanks for any effort you devote to the subject.