Stumbled upon AS 2 weeks ago and it's kinda blown my mind

The one thing I'm having trouble grasping is the best way to get QUALITY artwork QUICKLY into AS. From what I can tell, the vector drawing in AS is closer to Corel and Illustrator (which require more node manipulation that I prefer), unlike drawing in Flash which feels more Raster than Vector.
Then I look at the great work being done across these boards, and I realize that I may be overlooking a pipeline that someone else has discovered.
So...to my new AS friends...what is your suggested workflow? Do you...
...bring in bitmaps to animate?
...draw directly into AS?
...bring in vector work from other sources (flash, corel)?
...have another brand of genius that I haven't tried?
Thanks for any feedback!
-Scott (boogiebac) Tykoski