Ok, i guess i'll do my part.
I'll admit to know almost jack shit about Argentinian classics. But i can point you towards some good films that came out in the last decade of so.
The essentials:
-Nine Queens
-El Aura
Bielinsky took Argentinian cinema to a whole new level with those films. His demise at such a young age after those 2 amazing films was huge hit for the industry.
-El Hijo de La Novia
-Luna de Avellaneda
Juan Jose Campanella made these 2 great films about ordinary life in Buenos Aires. A family torn apart by an illness and a neighborhood club struggling to stay alive. Both are dramedy's. In the best way possible.
Those 4 films have the same star. Ricardo Darin. Arguably the biggest Argentinian star.
Another maybe smaller films.
-El Abrazo Partido - A comedy about a Jewish family in a Jewish Neighborhood. Really funny.
- Tiempo de Valientes - A buddy cop action movie. Also really funny.
Pizza, Birra, Faso
- A coming of age tale of a bunch of kids in Buenos Aires.
El Lado Obscuro del Corazon - A dark psychological tale of a twisted man who can't find a partner and sleeps with women and then kills them
Hombre Mirando Al Sudeste - The original film K-Pax ripped off. Our original version is dark, bleak, and not happy at all.
Both those films are from the same director - Eliseo Subiela
And the last one is the only Academy Award Winner for Best Foreign film.
La Historia Oficial - The Official Story A tale about the military dictatorship days in Argentina.
Also,
Whisky Tango Zulu, a film that's half documentary and half recreation of a big aviation accident. The director and Star is an actual pilot who wanted to tell the story of how politics made the accident happen!
if you like these, let me know (if anyone watches ONE film, i'll be surprised

)