I am glad to see SittingMooseShaman bring the moon into the discussion.
It is my contention that we(by we I mean the USA) should launch a nuclear attack on the moon. We have the technology, and it could be accomplished remotely.
This would serve several puposes, the first being a deterrent to any space-alien attacks.
Imagine the intergalactic gossip-"not a good idea to mess with Earth, those crazy effers blew up their own moon"
The same logic should apply to terrorist attacks as well. Decimating a middle eastern desert would be childs play compared to blasting away a lunar target.
I know the peaceloving detractors among us always bring up that thing about the ocean tides. I say so what, who needs 'em? It might screw up the surfing, but it could also eliminate tsunamis. Could also keep those pesky sharks away from the beaches, who knows.