This is an excellent, high-quality podcast from the University of Texas for learners of Brazilian Portuguese - especially those that speak or have studied Spanish.
The lessons are well-designed by professors and the material is quite helpful.
Our podcasts are designed to help those who are learning Portuguese, especially if you have a previous background in Spanish. First, you find some pronunciation podcasts that are built around dialogs illustrating specific sound differences. You can also download pdf transcripts and participate in a discussion blog for clarification of questions.
Next, you find grammar podcasts that focus on grammatical differences between Spanish and Portuguese. All of the lessons are also built around some cultural aspect that makes Brazil so awesome.
Try it out, and join our Brazilpod community. There are no registration fees or restrictions, just great chances to learn more Portuguese.