History of Philosophy fans might also like to check out the "History of Philosophy - No Gaps" at
http://www.kcl.ac.uk/schools/humanit...oppodcast.html .
It's a very clear and concise series of talks, in depth but not too technical. Peter Adamson, the speaker, is actually doing a complete series starting with the earliest Greek Philosophers and going on from there.
There is also another series put out by Oxford University called "General Philosophy". These are both available on ITunes. Interesting that a lot of these programs rate highly - could ebook distributors please note that a lot of us actually like some serious content. (And we'd also like it in EPUB, not just PDF.)