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Christie Brinkley's ex tells Barbara Walters about his marriage and affair.
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Experts debate whether uninformed voters should head to the polls.
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Watch Friday, Oct. 10 at 10 p.m. ET for the worldwide premiere of "Womanizer."
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DeWayne McKinney, who spent nearly 20 years in jail, dies.
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Two humans work for acceptance into a pack of wild wolves.
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Sen. John McCain describes his childhood, and the decision to run for president.
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Diane Sawyer's 'Portrait of a President' continues with the candidates' wives.
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An intimate look at a complex and talented woman with deep empathy for children.
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Her tightknit family had its own way of evaluating Barack Obama.
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Democratic candidate tells Diane Sawyer how his family gave him a foundation.
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GOP candidate tells Diane Sawyer about his earliest influences and challenges.
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"30 Rock" star tells Diane Sawyer his infamous voice mail nearly led to suicide.
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CEOs walk away with millions while their employees go broke.
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A Florida woman calls 911 while being chased by her killer.
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Court rules sex discrimination law applies to a transgendered woman.
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Exclusive photos and home video: at home with Caylee and Casey Anthony.