Lynx, the spray deodorant company, turned windows of a house in Sydney into a series of sexy and steamy behavior. The trick was that you could only peak at the sexy scenes with special polarized glasses, it was unseen and invisible to the naked eye.
It's a pretty clever trick (even though it's totally stunt advertising) that uses hacked LCD screens as windows of a house and polarized sunglasses as the decoder. It's perfectly racy for the beautiful people of the beautiful city that is Sydney. [Lynx via Design Taxi]