Pullitzer Prize-winning investigative journalist Seymour Hersh. In his book about JFK, "The Dark Side of Camelot," Hersh reveals how Kennedy plotted to kill Castro; how Kennedy's affair with Judith Exner left him vulnerable to blackmail; Kennedy's relationship with Marilyn Monroe; and his plans to pull out of Vietnam, but not before his re-election.

Author Salman Rushdie talks to Allan Gregg about Kashmir; his latest book "Shalimar The Clown"; and about Islam in general. (Original interview from October 2005)

Christopher Hitchens talks about his book of essays entitled "Unacknowledged Legislation", which is an examination of the relationship between literature and politics; writers who have entered the arena of political debate,

Journalist Christopher Hitchens has become famous for attacking icons such as Mother Teresa. Now the columnist for Vanity Fair and The Nation exercises his scathing criticism on Bill Clinton. A Gregg and Company segment.

She's been called Osama bin Laden's worst nightmare. Canada's Irshad Manji. journalist, feminist, Muslim activist -- she's world renowned as an outspoken advocate for Islamic reform. Manji is the author of "The Trouble with Islam Today" and now she's come out with a new DVD, "Faith Without Fear".

Many of us believe that aid to Africa is crucial to lift people out of poverty. But not Dambisa Moyo. In a controversial new book, she argues that foreign aid has been a disaster for Africa and must be stopped. Moyo was born and raised in Zambia, but educated at Oxford and Harvard. She has worked for both the World Bank and Goldman Sachs. Her book is call "Dead Aid"

STEVEN LEVITT: University of Chicago economist Steven Levitt is best known for his work on crime; particularly the link between abortion and the crimt rate. He is also co-author of the best-selling book "Freakonomics", which is a collection of his economic theories translated intro prose to attract a wider audience.

Salman Rushdie -- literary lion and global icon. It has been two decades since he went into hiding with a price on his head after writing "The Satanic Verses". Those days are long over. Rushdie has been knighted by the Queen and for the second time, his novel "Midnight's Children" has won the Best of Booker Award. His latest novel is called "The Enchantress of Florence".

The former head of the failed UN Peacekeeping Mission in Rwanda, Lt-Gen Romeo Dallaire, talks about his new book "They Fight Like Soldiers, They Die Like Children: The Global Quest to Eradicate The Use of Child Soldiers".

Psychiatrist Dr. Kay Redfield Jamison, one of the world's foremost authorities on bi-polar disorders, from which she herself suffers talks about depression and suicide, including her own attempt to end her life.