Performancing's podcast on Blogging - informational ideas for writers with blogs, and of course - particularly useful if you are a professional blogger.
Writing Excuses podcast features three writers (Brandon Sanderson , Howard Tayler, and Dan Wells) talking about their various writing challenges, either amongst themselves or with guest interviewees. They now have a CD out also.
* May cause offense*.
Pure European Trash - a scantily clad woman (apparently it's always summer time where she lives) discusses the meaning of certain English words in a thick accent. However, it's interesting and a popular video series.
Lifehack's listing of 50 different writing techniques written by Roy Peter Clark and held at the Poynter Institute. Topics include Show and Tell, Using Strong Verbs, Original Images, and 47 more.
Holly Lisle's Online Writing Career course, How to Think Sideways. For 6 or 12 months. Excellent course, full of content and explanation. Thoroughly recommended.
Writers On Writing with Barbara DeMarco-Barrett - numerous interviews with writers in a large archival series.There is a live stream which takes you to KUCI 88.9FM broadcasts, and an archive list of the audios.