A fun, simple, guerrilla marketing stunt by McDonald’s Canada. I like this because it was relatively cheap to pull off, it created an event around which sharable content was produced (by the brand and by consumers), it lends itself well to being shared via social media, it creates a fun moment in time for the brand to talk about, and the message is built into the medium. Its a classic Idea Virus.

This would be pulled off with some promotion beforehand via traditional and social media, shared during the event on social networks (facebook, twitter, youtube, ustream, tumblr, foursquare, and others), and shared afterwards through brand and consumer-generated content (videos, photos, tweets, posts, tumbls like this etc).