Stop whatever that you are doing! Desktopography just released its 2015 collection and it's full of gorgeous pieces from the most talented designers and illustrators from our community.
It's great when you're walking down the street and you get to see sweet graffiti works. Not any graffiti, but top notch works, that once you see it, you'll definitely want to see more of that artist's pieces.
One guy that makes awesome graffiti like that is the Serbian artist Sobekcis. His pieces are really amazing and you should totally check his whole set of works at this portfolio. You may also follow him at Twitter. He'll appreciate it. I hope you enjoy these.