The Sheridan Interactive Multimedia students have made a set of tutorials to show the
new animation features in Flash CS4 including:
MOTION EDITOR – now animation is handled like in After Effects
INVERSE KINEMATICS – apply a skeleton and drag or animate the bones
3D – you now have x, y and z and it makes it easy to animate with parallax
http://imm.sheridanc.on.ca/go/animation