In watching a piece on the Freemasons on CBS Sunday Morning, I was reminded of the eye on top of the pyramid image, and I thought that idea might make a fun and more accurate representation of what the NSA does: spy on everyone. So how about this for the NSA logo: the capital dome, but with the statue of freedom replaced with that big all-seeing eye from the pyramid on the dollar bill.
That would be more apropos than what they use now. Plus, it might remind everyone of the eye on the tower from The Lord of the Rings, and scare our enemies (and us too, maybe).