Tonight on 20/20: Bryan Caplan, author of The Myth of the Rational Voter: Why Democracies Choose Bad Policies (Princeton University Press, $17.95, 9780691138732/0691138737), which recently was reissued in paperback with a new preface from the author.

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On Sunday on CNN's Fareed Zakaria GPS: George Soros, author of The New Paradigm for Financial Markets: The Credit Crisis of 2008 and What It Means (PublicAffairs, $22.95, 9781586486839/1586486837).

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On Sunday on 60 Minutes: Joaquin Garcia, author of Making Jack Falcone: An Undercover FBI Agent Takes Down a Mafia Family (Touchstone, $24.95, 9781416551638/1416551638).