World/Wierd/Strange Etc Events

Could use some cool world/wierd/strange etc events.

I came up with a few..

Sheep Invasion = Sheeps invade the world...
Genocide = Instantly kills every unit, not including buildings
Zerg Rush = Summons Zerglings to attack your enemy.
Zerg Attack = Summons Zerglings to attack any unit in its way, doesn't attack buildings.
Foggy = All towers lose the ability to attack.

Thanks for any ideas...