Brazil: A Spanish Speaking Country?

Um... so, last night the popular TV series on CBS, CSI:Miami had its season premier. I usually watch the show and was very interested as the show was supposedly taking place in Brazil. Well, during the course of the show they mentioned a favela and saudades.... both words in Portuguese but the rest of the time the actors on the show where saying random bits in Spanish. Yes. Apparently they speak Spanish in Brazil! Nice, right? Leave it to network television to make my country's people more stupid and use huge gross inaccuracies in a primetime show. Que bem!... I mean... Que bien!