I'm addicted to podcasts, plain and simple.
I can't get to sleep at night without hearing an episode of Mervyn Bragg's BBC4 program, In Our Time. When I'm playing the PlayStation, I have to have the Napoleon Bonaparte podcast going.
I rush to my MacBook and hit 'Refresh' first thing every morning to see if Marc Maron has offered up a new installment of WTF, which is quickly becoming the podcast-equivalent of heroin.
I've swooned to Bart Ehrman lectures on St. Paul, laughed to Rude Pundit visits to the Stephanie Miller Show and succumbed utterly to the genius for James Howard Kunstler and his Kunstlercast.
Do a Google for something or someone you're interested in, add 'podcast' and you'd be amazed at what pops up. Between your kickass iTunes music library and a few hundred podcasts, you'll never have to listen to crappy commercial radio again.