Writing Excuses is an SFF writing podcast, and a pretty amazing one at that. My personal favorite episode is the first one with Mary Robinette Kowal (who is now a regular member of the cast), in which she applies the principles of puppetry to writing. The other regular cast members are Brandon Sanderson (Mistborn series), Howard Taylor (Schlock Mercenary), and Dan Wells (Partials). Several of their podcasts are applicable to non-genre fiction.
Writing Resource of the Day: Writing Excuses Podcast