This is a fantastic podcast that will change the ways in which you think about many issues including: physiology, learning, cognition, language, and much more.
In addition to podcasts, there are discussions, transcripts (for some episodes), and blog postings. I can’t say enough good about this podcast. It has really renewed my interested not only in brain science, but in getting back to my (applied)linguistics roots and refreshing, as well as building, my knowledge-base in that area.
The only negative is that you’ll have to find about an hour when you doing nothing else. This is not the sort of material that you can multitask with (also discussed in one episode).