Space Invaders Easter Egg - Phone Home!

Could this be the grand-daddy of them all?
It has been a long time since I saw this done. Like 15 years or more - I forget.
This is how I remember it;
In the first wave, shoot all of the aliens (including the saucers) except the second from the bottom on the very left. To do this you'll have to shoot round him to get the last one.
The alien radio's his mothership and you get a shed load of points.