Not really a podcast, but BBC Radio 3's “The Essay” program currently has a series of 15-minute lectures on Anglo-Saxon people and life from experts. http://www.bbc.co.uk/programmes/b01nf9g4All the episodes I've listened to so far are great. There will ultimately be 30 episodes, and it looks like they will be up for a year. These are audio-only, and I wasn't able to listen via mobile device.
Thanks for the tip! I just downloaded the 5 they have available as podcasts — haven't listened to them yet. I wish there were a way to get the older 15 episodes onto my ipod though — I need stuff to listen to when I go for my walks.