Two clever transforming ads.

First, a billboard by
Spring Advertising + Design for the FX makeup school at
John Casablancas Institute. From 300' away, the woman looks normal. But approach to 50' and the woman becomes a monster. The landing page for the school is absolutely horrendous, as if it was designed by someone who had never used the web.

Second, a bus shelter ad by
Jung von Matt for Amnesty International. Thanks to eye recognition, whenever the ad thinks no one's looking at it, the image of a happy domestic couple turns into one depicting domestic abuse.
Via.
*Previously:
Church promotes "Puresex" on billboard.
*
Buy vintage advertising at eBay.