Well Fellini is a given, but Italian Neo-Realist movies like Ladri di biciclette are also popular and renowned with Brazilian cinema aficionados (or at least the ones I talk to). Italian movies are up there with French and German as stuff that you just have to you know if you want to claim you like good cinema. I just typed "classics movies show" into Google and the most recent round included stuff like Rossellini and Giovanni Vidali (apparently we had a roll of Spartaco, freshly restored :) )