Linguistically, Argentine Spanish has a very unique Italian flair, since 50% of its population holds Italian heritage; much of its population descends from European immigrants. While you don't need a language class to understand it if you already speak Spanish, Argentine Spanish is like "Spanish if you shoehorned some Latin into it."
Argentine politics have tended to be revolution prone, with popular leaders displaced by authoritarian governments. The frequency with which this happened led to Gerardo Munck using it as a case study for how theories about how the legitimacy of government comes and goes. This cyclical relationship can best be seen in caudillo Juan Manuel de Rosas, whose legacy within Argentina has been the subject of debate, as he has been portrayed both as a brutal tyrant and a dutiful public servant. A final coup brought an end to Peronism, which itself had been guilty of heavy censorship and political chicanery, and in the 1970s and 1980s the infamous "Dirty War" was waged by the military junta of Jorge Rafael Videla against internal opposition: some ten thousand Argentines were "disappeared, mainly by being dropped from helicopters." Members of the movement Madres de Plaza de Mayo ("Mothers of May Square") still search for those missing persons.
After the return to democracy, Argentina had a couple of economic crises. The country has since experienced economic growth, but corruption, unemployment, inflation and poverty are still widespread.
After the Second World War, the Juan Perón government provided shelter to a number of people wanted in connection with Nazi war crimes, even appointing some of them to significant government offices. The Catholic Church and some conservative Nazi supporters had helped them escape and it proved extremely difficult to get even top-level Nazis to trial. Israel famously captured Adolf Eichmann in Argentina to bring him to trial (and ultimately hang him) in Jerusalem, but other Nazis were luckier and many died unperturbed of old age with Argentina or other South American right-wing regimes holding their protective hand over them.
In 1982, the dictatorship ruling Argentina made the questionable decision to invade a bunch of rocks inhabited mostly by penguins. The British thought it was their bunch of rocks (in fairness, the islands' population is British); the ensuing war resulted in the resumption of the status quo and the deaths of over a thousand people (mostly Argentine).
Argentinians love sports, especially fútbol.
Argentina's primary export is Popes, in which they have cornered 100% of the market.
Argentina is one of several countries to claim a slice of Antarctica. It's also, along with Chile, one of the few to ignore the Antarctic Treaty of 1959 and continue to insist on its claims. Customs officials don't let that stop them having it both ways of course: they still shake down cruise ships returning from Antarctica on the grounds that they've left the country, even though by Argentina's own statements the ships haven't left it at all.