Found some interesting recordings from the university of Arizona the other day.
Khan Academy also got a very good series on cosmology. I use the iPad application and by signing in I'm able to track my progress. Go to "Science" - "Cosmology and astronomy" and start watching. He has great videos on how large the (observable) universe is, our existence versus the time since the big bang, hos starts and planets form, Earth's history and seasons, animal evolution, and also a series on other life in the universe.