From wikipedia:
The Secret in Their Eyes (Spanish: El secreto de sus ojos) is a 2009 Argentine crime thriller film, directed by Juan José Campanella, based on Eduardo Sacheri's novel La Pregunta de Sus Ojos (The Question in Their Eyes).
The film stars Ricardo Darín and Soledad Villamil in a joint production of Argentine and Spanish companies.
The film won the Oscar for Best Foreign Language Film at the 82nd Academy Awards, making Argentina the first country in Latin America to win it twice (having already won for The Official Story in 1985).
This happened just three weeks after being awarded the Goya Award for Best Spanish Language Foreign Film of 2009 (the Goya Awards are the Spanish equivalent of the American Academy Awards).
As of 2010 it has become the second biggest box office success in Argentine film history, only surpassed by Leonardo Favio's 1975 classic Nazareno Cruz y el lobo (Nazareno Cruz and the Wolf).
I saw it last week and loved it.