I don't watch a lot of TV, but I do listen to about 10 to 15 hours of podcasts a week, while walking around, doing chores, working out or dozing off.  I use the Downcast app on my iPhone now that Apple has crippled podcast functionality in iTunes and released a buggy app. Here are the latest ones holding my interest, in alphabetical order; it's heavy on Mac stuff and comedy. Downcast has a good search, auto downloads in background and a simple playlist function that can serve you up the latest episodes one after another.