When I was scripting it this one, I thought it might be something new, cause I couldn't find anything on Scriptspot. But today (when I finished it) I recognized that there are quite a bunch of theese scripts here on CGTalk and that it's an old hat. :/ Nevertheless I like to throw yet another Morphtarget-Mirror Script out so the rest of the world could use it or not. It works also on asymmetrical meshes... minor asymmetrical ones ;)
By the way I'm wondering if there's a way to calculate the symmetrical points within a runtime < OČ. Any ideas?