For those who don't know, JR is kind of like an underground French Banksy with a slightly more politically charged nature.
I was over in Berlin a few years back and saw what I believed to be original pieces of JR's work so grabbed a couple of snaps (below) near the famous 'Checkpoint Charlie' in Friedrichtstrasse/Zimmerstrasse.
Here you go: http://www.28millimetres.com/index_en.html - Explains the project in short if you're interested.
Should I stop banging on and just present to you a link to the projects video?...