I recently remembered this out of home advertisement by Cramer-Krasselt for Corona Beer. Luna Corona watches over a dark Manhattan night. If you look at the ad at just the right moment, it looks like a half-moon fits perfectly where a lime would.
It takes great imagination to use the moon as a tool to sell an advertisement. I love how they used the natural world to highlight the cultural world Corona lives in.
It would be interesting to see how much further Cramer-Krasselt could have gone with this campaign. Though I did not see any other communications about this campaign, one idea is a digital leg where customers Tweet a picture of the moon shaped like a lime and win a Corona.