The End of the Big Three Networks.

E-books are rapidly gaining market share, and publishing companies are going through changes that parallel the music business. New Yorker writer Ken Auletta explains how the transition from paper to screen is changing the way we choose, buy and read books — and what the changes mean for publishers and authors.

The critically acclaimed drama went behind the scenes at a fictional White House. We listen to archival interviews with show creator/writer Aaron Sorkin and actors Allison Janney and John Spencer.

Former president of NBC Entertainment Brandon Tartikoff was the youngest person to hold that position. While there, he was responsible for such hit series as "The Cosby Show," "Cheers," "Miami Vice," and "Hill Street Blues." Now Tartikoff is chairman at Paramount Pictures. He has a new book about his NBC years, called "The Last Great Ride."