Tennessee Sen. Lamar Alexander explains the "unfinished agenda" in our education system. Actor Gary Sinise describes his Operation Iraqi Children project.

Author Judith Miller, who writes frequently on terrorism, discusses biological weapons. Actor Dennis Haysbert talks about the life choices he's made.

Comedic legend Carl Reiner discusses his impact on American humor. Producer and activist Laurie David describes the effect of the worsening environment.

White House hopeful Sen. John Kerry gives his take on the situation in Iraq and talks about healthcare, taxes and Warren Buffet's involvement in his campaign.

On a special Mother's Day show, Hollywood legend Debbie Reynolds and multi-talented Carrie Fisher compare notes on the business and discuss their upcoming mother-daughter presentation.

Harvard law professor Lani Guinier considers the unfinished agenda of the Brown v. Board of Education decision. The incomparable Patti LaBelle reflects on her career.

Journalist Bill Moyers reflects on Brown v. Board's unfinished agenda of race and class. Filmmaker Stanley Nelson discusses the reopening of the Emmett Till case.

Cheryl Brown Henderson reflects on the legacy of the Brown v. Board decision. Actor Blair Underwood and filmmaker Sharon Baker discuss the impact of the documentary, With All Deliberate Speed: The Legacy of Brown v. Board.

Rev. Jesse Jackson Sr. discusses previously unreleased photos of Iraqi prisoner abuse. Actor Ice T and exec producer Neal Baer take Tavis behind the scenes of Law & Order: SVU.

Filmmaker Morgan Spurlock explains the inspiration for his new documentary. The Funk Brothers' Jack Ashford and Eddie Willis reflect on how it felt to finally get recognized for their work.

Sen. Ted Kennedy and Wade Henderson, Executive Director of the Leadership Conference on Civil Rights, help celebrate today's 50th anniversary of the Brown v. Board of Education decision.

Columnist Leonard Pitts shares how winning the Pulitzer gave him a feeling of validation and Guy Pearce recounts the juggling required to star in and sing on the soundtrack of his new film.

Playwright Suzan-Lori Parks says she wrote her Pulitzer Prize-winning play in only 3 days. Country artist Dierks Bentley wants to bring the traditional country sound to a younger audience

Writer, poet, and activist Dr. Maya Angelou explains the "epidemic of ignorance" in today's world and what we must do to overcome it.

NBA legend-turned-author Kareem Abdul-Jabbar describes his new book about WWII's forgotten heroes. Actress Glenn Close explains how she likes to take risks in the roles she chooses.

Former Ambassador Joseph Wilson discusses what he says are the lies that led to the war in Iraq. Singer Nelly Furtado reflects on her sophomore CD and being a new mom.

Writer Gore Vidal explores the compatibility of freedom of speech and criticism of the government. Rapper Talib Kweli wants to bridge the gap between underground and mainstream artists.

The legendary Bill Cosby addresses the controversy over his recent comments that were intended to be a call to action to "turn the mirror around on ourselves."

Father and son filmmakers Melvin and Mario Van Peebles talk about their new project. Joe Lamond describes a new program to increase music education in schools.

Singer Alanis Morissette talks about life after the success of "Jagged Little Pill" and performs her new hit single.

Sen. John McCain critiques the situation in Iraq and the 9/11 panel considerations. Actor David Duchovny explains the challenge of comedic roles.