Learn in Your Car: Spanish, Level 1by Henry N. Raymond
Douglas Adams: Parrots, the Universe, and Everythingby Douglas Adams
I've Been to the Mountaintopby Martin Luther King, Jr.
Great Speeches in History
Living on Half a Dime a Dayby Sarah Elizabeth Harper Monmouth
The 7 Habits of Highly Effective Peopleby Stephen R. Covey
Talking to Strangersby Malcolm Gladwell
A Promised Landby Barack Obama
A Knock at Midnightby Martin Luther King, Jr.
Factfulnessby Hans Rosling
Intelligence Squared U.S. Podcast
Frontline Audiocast - PBS Podcast
Grammar Girl's Quick & Dirty Tips for Better Writing Podcastby Mignon Fogarty
After Words - C-SPAN Podcast
Hidden Brain Podcastby Shankar Vedantam