*EDIT*ask me if ya want me to draw you a pic cuz I'm bored and my flash is getting nowhere............
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well I've been talking about express animator here and there so I thought I'd put out some info about it so here it is

what express animator can do

Skeletal Animation
Express Animator features skeletal animation which is a way of linking together shapes such as arms or legs so that can be animated like a puppet. This allows the user to create moveable characters.

Tweening
yes motion tweening

Morphing
shape tweening

Javascript Interfacing
Although Express Animator does not implement the full ActionScript it is possible to make games with Express Animator using Javascript interfacing. This is a similar method to the way Silverlight implements interactions. This means that the user gives a reference name to each MovieClip in a frame. Then the user can interface with the objects in javascript. For example the following takes the position of a MovieClip with reference object1 and adds 20 to it: var x= SWFobject.TGetProperty("_root.object1"
,0); SWFobject.SetVariable("_root.object1._
x",x+20); Where SWFobject is the javascript DOM object which represents the embedded SWF.

Import and Export Formats

Express Animator imports and exports media files in several formats to various extents. The main ones are:

SWF
FLV
AVI
XAML
SVG
PDF
EPS
BMP
JPG
GIF
PNG
TIFF
Animated GIFs
WAV
BVH
to tell ya the truth I dunno what 1/2 of those are^^;

and to top it off it's cheap if ya ask me it's a good idea but then again that's coming from someone who was useing liveswif^^;
just ask if ya wanna know where to get it

(italic stuff pasted from http://en.wikipedia.org/wiki/Express_A nimator)
a screen shot from it I found online if anyone's wondering(skeletal animation)