I've just discovered the French podcast Les Vendredis de la Philosophie, a podcast on philosophy in French (also available on iTunes). Great for French speakers and those like me who would like to improve their French while listening to something they're interested in. And, of course, with a podcast you can stop and replay the bits you don't understand, or play it over and over again ad la nausée.
There are some excellent free materials for studying different aspects of theology, philosophy and related subjects available online. Laura Mulligan has compiled a list of her top 100 sites. Definitely worth exploring and perfect for the autodidact.
D.C. Dennett discusses Darwin 'the number one philosopher who wasn't a philosopher' in a free online video on iTunesU c/o Stanford University. The video is nearly two hours long. There is a 13-minute recap of the previous week's lecture before D.C. Dennett is introduced. Dennett appears at 14.40 looking uncannily like Darwin. Dennett is a great lecturer. Well worth watching.