Terry and I love watching documentary's all kind. We love the amazing personal stories centered around what you can only imagine to be simple subjects; bingo, Donkey Kong, spelling bees, crossword puzzles, ballroom dancing in education, etc.).  One such documentary that we watched before moving to Buenos Aires, was Bomb It, a documentary about graffiti artists around the world.  Throughout the documentary, they visit The United States, a host of counties in Europe and some in South America (Brazil and Argentina).  

While in Buenos Aires if you are interested in Street Art you can take a walking or bike tour to view some of the famous Street Art murals.  Graffiti Mundo is the most recommended one.   You can also grab a beer at Hollywood in Cambodia and view their gallery of Street Art.