Terry Gross

Levy wrote "Rat Pack Confidential: Frank, Dean, Sammy, Peter, Joey & the Last Great Showbiz Party" (Doubleday). It's about the circle of showbiz pals who played and later performed together. It included Frank Sinatra, Dean Martin, Sammy Davis, Jr., Peter Lawford and Joey Bishop. Levy is also the author of the biography, "King of Comedy: The Life and Art of Jerry Lewis."

Satirist and columnist Harry Shearer. He's the host of the syndicated NPR radio program, "Le Show," does several voices on "The Simpsons" and is a weekly commentator on ABC TV's World News Now. Shearer will give us his thoughts on President Clinton's talk to the nation last night regarding his relationship with Monica Lewinsky.

Sleep physiologist Martin Moore-Ede. He is founder and president of Circadian Technologies, Inc., which helps shiftworkers cope with night shifts and rotating work schedules. He provides assistance to companies that are open round the clock. Dr. Moore-Ede is a professor at Harvard Medical School, and is the author of the newly published "The Twenty-Four Hour Society: Understanding Human Limits in a World That Never Stops." (Addison Wesley).