Actually it was done before:
Look on this page. The pic is gone, but the responses are there. 1/3 down the page posted by DEATHATTHEDOOR.
I remember it well, because I won it <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
Ah yeah, it's time to announce the winner.
Congratulations, Cleglaw
"Ha! That phony old veteran with one leg was just a decoy."
Many captions were excellent. Congratulations to everyone.
In case you don't know it, it is a reference to The Day of the Jackal