MUTO a wall-painted animation by BLU from blu on Vimeo.
This video is amazing. It was apparently made by painting, recording a frame on video, erasing, and then painting the next frame, and repeating - all on walls and buildings around Buenos Aires! It must have taken weeks to create this 7 minute video. Wow. Thanks to Bors Blog for the tip (Matt Bors is an artist and a refreshingly irreverent political cartoonist, one of my faves).