Thing 20 - Subscribing to podcasts

I found that podcastalley and itunes were the easiest way to search for podcasts. Itunes seems to only download new episodes of podcasts but not the older episodes. Podcastalley allows you to locate older episodes more easily. I searched for math podcasts since I am teaching math right now. I have subscribed to Video Math Tutor: Basic Mathematics & It's all about math. One thing I really like about both of these is that there is video that goes along with the podcast. However, I'm not so sure that I will be able to use either of these for my current math classes.