I just discovered something really cool over the weekend. iTunes is now selling the audiobook edition of "Fry's English Delight", the BBC Radio 4 documentary series on the English language.
For years, Stephen Fry was best known for his work with the comedy team "Fry and Laurie" (yes, that Laurie...Hugh Laurie, who you may also know as Dr. Gregory House.) Fry has a wonderful speaking voice and a good sense of humour; most importantly, the documentary provides some interesting information about why certain things exist in English.
You can find "Fry's English Delight" on iTunes. There's also information about the program on the BBC's Radio 4 website.