I really really really really really really really wanted to find something online about making a school of fish that parted when the mouse rolled over it. I KNOW I've seen things like it (mainly at Flash Forward) but I can't remember who showed it.

Its gotta be so simple!
Just the x and y of the mouse...and...if its near the object...then just tell the object to RUN AWAY...to a certain degree? And come back when the mouse has gone and all is well! Help!