Silent Running - Mike and the Mechanics
That one in particular has had the greatest impression on me ... not so much the video, but the words to the song.
I work in a Department of Defense office and, for the last 10 years, in conjuction with the signature that I use for my emails, I have added the following passage:
Swear allegiance to the flag,
Whatever flag they offer;
Never hint at what you really feel.
Teach the children quietly,
For, someday, sons and daughters
Will rise up and fight while we stood still.
No kickback on it yet but I'm sure that my name is on someone's list somewhere ...
But then, again, I'm sure I was on some list before, just by being a member of FreeRepublic.