uses for drawing API - generating 2D animation

I am researching ways to use the drawing API to generate 2D animated screensavers and wallpapers for Flash Lite v2.0 and greater phones.

I've seen some examples of using the api for transitions between static images, and generating basic shapes. I realize there will be CPU limits on what a phone can do with generated animation compared to PC Flash.

Any suggestions, online examples, articles or code (class) examples are much appreciated.

here's what i'm going to be building:

using the drawing API
2 points on the stage describe the beginning and end of a line.
the 2 points then move to new positions on the stage and the line redraws itself in real time to follow along. any ideas?

cheers! -tom