This morning on the Today Show: Jean Chatzky, author of The Difference: How Anyone Can Prosper in Even the Toughest Times (Crown Business, $24.95, 9780307407139/0307407136).

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This morning on Good Morning America: Michael F. Roizen and Mehmet C. Oz, authors of YOU: Being Beautiful: The Owner's Manual to Inner and Outer Beauty (Free Press, $26.99, 9781416572343/1416572341).

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Today on All Things Considered: James Mann, author of The Rebellion of Ronald Reagan: A History of the End of the Cold War (Viking, $27.95, 9780670020546/0670020540).

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Today on Talk of the Nation: Kathleen Rooney, author of Live Nude Girl: My Life as an Object (University of Arkansas Press, $22.50, 9781557288912/1557288917). The author, whose book is a memoir about modeling nude for art classes, has been writing about her bookstore tour, Live Nude Girl in the Devil's Territory, on her blog.

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Today on the CBS Evening News with Katie Couric: Susie Orbach, author of Bodies: Big Ideas/Small Books (Picador, $14, 9780312427207/0312427204), will discuss the negative impact the Barbie doll has had on women's body image on Barbie's 50th birthday.

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Tonight on Larry King Live: Rachael Ray.

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Tonight on the Daily Show with Jon Stewart: Nathaniel Frank, author of Unfriendly Fire: How the Gay Ban Undermines the Military and Weakens America (Thomas Dunne/St. Martin's, $25.95, 9780312373481/0312373481).

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Tonight on the Late Show with David Letterman: Russell Brand, author of My Booky Wook: A Memoir of Sex, Drugs, and Stand-Up (Collins, $25.99, 9780061730412/0061730416). Brand is also on the Today Show tomorrow morning.

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Tomorrow morning on the Today Show: Cheryl Forberg, author of The Biggest Loser 30-Day Jump Start: Lose Weight, Get in Shape, and Start Living the Biggest Loser Lifestyle Today (Rodale, $21.95, 9781605297828/1605297828).

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Tomorrow night on the Daily Show with Jon Stewart: Craig Mullaney, author of The Unforgiving Minute: A Soldier's Education (Penguin Press, $28.95, 9781594202025/1594202028).