Terry Gross

Plant formally fronted the band Led Zeppelin. His new solo CD includes tracks he recorded before Zeppelin and after. It's called Sixty Six to Timbuktu. (The interview continues through the end of the show.)

He wrote the introduction and commentary for the new book The Most Fearful Ordeal: Original Coverage of The Civil War by Writers and Reporters of The New York Times. McPherson is a professor of history at Princeton University. He is the author of many books on the Civil War era including Battle Cry of Freedom.

She is Kabul bureau chief for The Washington Post. She has covered South Asia for the Post since 1999, reporting from India, Pakistan and Afghanistan. She has a new memoir, Fragments of Grace: My Search for Meaning in the Strife of South Asia.

He is a founder of the conservative group rightmarch.com. According to the group's Web site, rightmarch.com "is an umbrella Web site for many conservative organizations." The group has launched media and e-mail campaigns, some of them against Moveon.org. They are planning to sponsor TV ads criticizing the liberal group. One of the group's members recently released a country song entitled "Hey Hollywood." The song pokes fun at so-called liberal actors and country musicians, like Willie Nelson and The Dixie Chicks, who speak out against the war in Iraq.

The group was founded by Boyd and Joan Blades, two Silicon Valley entrepreneurs, in the late '90s as a liberal political force. MoveOn.org recently sponsored the "Bush in 30 Seconds" ad contest. Some 1,500 contestants submitted ads and more than 100,000 people voted for them online. Moveon.org is now raising money to air the winning ad on TV this week and is even trying to get the ad aired during the Super Bowl.

His new book is Oracle Night. Auster is the author of 11 novels, three screenplays, five books of poetry and seven works of nonfiction. His recent works include the best selling novels The Book of Illusions and Timbuktu, and he also edited the NPR National Story Project anthology I Thought My Father Was God.

James Farmer, co-founder of CORE (the Congress of Racial Equality)

Clayborne Carson of the Founding Director of the King Papers Project, a long-term project to edit and publish the papers of the Rev. Dr. Martin Luther King Jr.

As a child, she had a crush on the 19-year-old preacher in her church. He was known as M-L, but later he became Martin Luther King, Jr.

Former standup comic Tom Kenny is the voice of SpongeBob SquarePants, the star of his own animated series on Nickelodeon. SquarePants lives under the sea in the city of Bikini Bottom where he works as a fry cook at a greasy spoon called the Krusty Krab. The SpongeBob SquarePants Movie opens nationwide Nov. 19.