Here in Argentina when I was a kid the National TV Network called "ATC"(Argentina Televisora Color) which later will be "Canal 7" , used to have a weird program in the afternoons called "Caloi en su tinta". This program was dedicated to the diffusion of the best animation art through history; for me at that age all this "cartoons" were so weird! sometimes almost frightening but despite all that I still wanted to watch it, allured to something that I cannot describe yet what was it.
Here are some, don't mind the presenter neither the language since the animations has barely any dialogues in it, pure expressionism through the drawing, music, sounds and animation.
Father & daughter.
La Tartelette(Dark humor)
Devoción(Argentinian work)
Palabras(Words)
I will also mention that thanks to this program I got to know about Wallace & Gromit in their first animation short films.