Prof Pogge rocks! Here are the web pages that go with them. Try the quizzes after you listen and see how you think you do?
Astronomy 161 Site
You can get the podcasts there but I got mine through iTunes.
May I also recommend the 365 Days of Astronomy Podcasts put out by the IYA to celebrate this year. Good and fun stuff there.
365 Days of Astronomy Podcast
If you want to contribute you can if there are still openings.
Jodcast is another one that is really good and I like it because though I live in the northern clime of our planet, they usually hit on a several items if you live south of the equator as well and that helps to get to know that a little better. Great site for beginners, but vets I think would enjoy it also
There's more but enough for now.