ANGER IN AMERICA� MYTHS AND TRUTHS ABOUT THE EMOTION WE LOVE TO HATE, ON "20/20," FRIDAY, JANUARY 25 ON ABC

Also: Cheating Death -- "20/20" Previews the National Geographic Channel Documentary, "I Came Back from the Dead"

Is venting anger healthy? Are men angrier than women? How can you curb family anger? "20/20" investigates why we're all so angry and what we can do about it, FRIDAY, JANUARY 25 (10:02-11:00 p.m., ET), on the ABC Television Network. Reports include:

Anger in Families: Deborah Roberts examines anger in families and how to deal with it. The Weinstein family had four out-of-control kids and a dad who frequently blew up, until "Supernanny" Jo Frost came to help them. Frost shares practical advice on how families can resolve anger issues.

Anger Myths: There are plenty of very angry people around, and plenty of myths about anger. Venting your anger is healthy� Is that a myth? Men are angrier than women� It sometimes seems that way, but is it true? And we've seen the stereotype in movies like "Grumpy Old Men" -- the older you get, the angrier you get -- myth or truth? John Stossel reports.

Anger and Narcissism: It is rare for a person who makes it really big in the movies, in sports or even in business not to become a narcissist, with the rage that so often comes with it, according to Robert Millman, a professor at Cornell's Weill Medical College. Millman treats some of America's superstars, and has become so familiar with what he describes as their narcissistic tendencies and insecurities that he has coined a syndrome unique to celebrities: acquired situational narcissism. "You can be a Saudi prince, for example, or you can be a baseball player or you can be a random billionaire, and you can develop malignant narcissism by virtue of the situation," Millman said, adding that narcissism often leads to anger. "It's this huge rage that you're not as great as you could be, or you're not being perceived as great as you could be," he said. Does that explain some of the destructive and outrageous behavior we've come to accept in celebrities? Perhaps, but it's not just the stars. University of Michigan professor Brad Bushman says that narcissism is on the rise in America, and that the phenomenon is particularly striking in young people. Chris Connelly reports.

The Angry Comedian: Lewis Black, known as the "angry comedian," tells Elizabeth Vargas that everyday affairs, from politics to waiting in line at the pharmacy, supply his inspiration for his comedy act.

Plus: Cheating death -- From a man whose heart stopped for hours after plunging into an icy lake to a woman who says she remembers the details of her surgery during a surgeons' induced clinical death, "20/20" previews a National Geographic Channel documentary entitled "I Came Back from the Dead," airing on January 29. Bob Brown reports.

"20/20" is anchored by Elizabeth Vargas and John Stossel. David Sloan is executive producer.