What people of Argentina are considered cultural icons?

Famous Argentinians

Jorge Luis Borges (1899-1986). ...
Diego Maradona (born in 1960). ...
Ernesto 'Che' Guevara (1928-1967). ...
Eva 'Evita' Perón (1919-1952). ...
Carlos Gardel (1887 or 1890-1935). ...
Astor Piazzolla (1921-1992).

How do Argentines greet each other?

In Argentina, people always greet each other with a kiss which is sometimes also extended into a hug depending on how well you know the person. It is also proper to introduce yourself to a group of people rather than waiting for the host to do it; and yes, most likely everyone should receive a kiss.