A file I created in response to a forum member asking how to create the effect of flies or bats to fly around randomly. Each bat has an invisible movieclip it follows with a little easing effect, while the movieclip being chased changes direction and position randomly. This creates a smooth turning effects of the bats.
[swf=http://www.voetsjoeba.com/lab/view/bats.swf]width=700 height=500[/swf]