The art of Cyrk.
In the late 1940's, the Polish Government approached a small group of artists to design posters for their Film Department. The artists agreed only on the condition that they control the subject matter, that they have the freedom to push beyond the typical clichés already riddling the world of art and design.
From this mutual agreement, a golden age of artwork rose to fame, known as the Polish School of Posters. This era lasted until the 80's, and the fall of communism brought capitalism to the country. This shift changed the landscape of commissioned art by the government. Where there used to be an average of 1,000 commissioned posters in the 50's, there are today only about 100 per year.
I've found a nice comprehensive collection of posters from this era. The most prolific venue apparently was the Polish Circus. It's quite a stunning collection to peruse. And keep in mind that these talented artists emerged from a country bruised and battered by the effects of WWII, and went on to create some highly influential, innovative, and isolated artwork around.