I was slow, and replay is gone forever, so I'll show it on the pic
http://i.imgur.com/WIAxBZs.jpg
After killing AT, AD, AT, Giants decided it would be a great idea to bash walls in front of a WT.
When the wall has its health at 1/3, some random barbarian activated the left Tesla.
It is located far away, and enclosed by walls, but suddenly all giants abandoned the (almost destroyed!) wall and went to the core (spring traps got them all).
It means that tesla popping anywhere on the map forces giants to re-think where the most tempting target is from their current position.
From AT the most tempting target was WT, but from the new spot mortar was more tempting, and tesla forced them to change their original decision.
This can be used in some advanced funneling, like making giants go for some wall, activate tesla at the end on the funnel, and go to the next funnel without doing
any damage to the base.
The trick can be repeated until you run out of teslas.
I don't think this can be used in any real base design though. But it is the fun thing to know