Greetings!
Ah, I've been curious about this style for ages! And for my surprise I came across this excellent forum.
Ahem, for introductions, I live in Brazil, and more specifically, a tiny island called Florianópolis.
Now, I'm not 100% these were meant to be brutalist architecture, but they sure seem to fit.
Here's my addition, they all seem to have made in the same period of time, and most likely are from the same architects...
My favorite:
(I didn't know how multiple uploads worked on imageshack, so here are the "albums"...)
http://yfrog.com/ao8213538jx
http://yfrog.com/j8img0946vjx
http://yfrog.com/esimg0932djx