Using code to play MovieClips in reverse and/or play them on a different frame rate.

One easy way to play movies clips reversed is to affect the currentFrame propriety. The problem is that currentFrame is read only, so you need to make a custom class that extends MovieClip where you can assign values to that propriety.

The class:

The MovieClip:

So with Tweener you can now play with your MovieClip. You can play it on reverse, play it on a different frame rate, and you can even use some crazy transitions.

Example:
example1.zip