Those who know me, know that I have a penchant for baile funk, even djing a bit every now and then. Here is an article on the subject by Alex Bellos, an English guy who writes about all things brazilian in The Guardian and Observer.
It's quite a good article, though focussing a bit too much on the violent aspects of it rather than the DIY musical angle, which is what I find interesting.
The five baile hits list at the end can't be faulted though as a good beginners guide.
For further reading here is an interview I did with DJ Marlboro quite a few years ago.