Here is a brilliant video highlighting the works of JR, the 2011 recipient of the TED prize.
Starting with a simple portrait photograph of people he sees on the street, JR takes a team of volunteers and mounts enormous black-and-white reprints of his portraits and spreads them across the facades of buildings in unsuspecting locations across the globe.
His work has taken him to slums around Paris, walls in the Middle East, the roof tops of villages in Africa, and across the favelas of Brazil. These simple and captivating images become a part of the local landscape that transforms the surrounding areas and inspires people to view the world a little differently.
The video is part Inside Out Project a large-scale participatory art project that transforms messages of personal identity into pieces of artistic work.
If you want to get involved. Hit the link.