Remember the super innovative advert campaign for security glass? If not I'll fill you in on the most viral advertising campaign ever.
The 3M Security Glass advert was placed at a bus stop which, basically, advertised three million dollars within two pieces of unbreakable glass and guaranteed that, if anyone can break it open, they can keep the money. People were invited to arm themselves with hammers, shovels and other heavy tools and to try to break it. A security camera was present to make sure no one broke the rules and that people couldn't get to keep the money if they broke it.
The money stayed in the glass for an entire year! Pretty impressive stuff.
See the video below for even more brilliant advertising campaigns.