As he continues to evade U.S. authorities, Edward Snowden joins a list of famous people who blew the whistle on private and government scandals. It is not yet known what kind of long-term impact Snowden's leak may have.
Mark Felt, a.k.a "Deep Throat"
Associate Director of the Federal Bureau of Investigtion until his retirement in 1973, Mark Felt gave Washington Post reporters Bob Woodward and Carl Bernstein information on what would become the Watergate burglary scandal. The scandal led to the resignation of President Richard Nixon.
Felt denied involvement until revealing himself as "Deep Throat," in 2005.
As Vice President of Corporate Development at the Enron Corporation, Sherron Watkins alerted her Enron superiors of accounting irregularities. Shareholders and employees lost billions in pensions and stock prices.
Watkins has been criticized for not making the irregularities known sooner, as it took five months for her initial report to reach the public.
In 1971, Daniel Ellsberg, a former United States military analyst, released the Pentagon Papers, a top-secret Pentagon study of the choices made by the U.S. government regarding the Vietnam War, to various national newspapers.
The leak revealed many secret government decisions, among them that four presidential administrations had misled the public about their intentions regarding Vietnam.
Jeffrey S. Wigand is a former employee at Brown and Williamson, who worked on the development of reduced-harm cigarettes.
Wigand appeared on 60 Minutes in 1996 and stated that his company had intentionally increased the amount of nicotine in cigarettes.
Wigand said he was harassed and received death threats affter his appearance on the program. He now works as a lecturer and consultant and was portrayed by Russell Crowe in the 1999 film The Insider.
Currently suspected of having shared classified material with WikiLeaks, Bradley Manning is an army soldier who was arrested in 2010.
Information was compiled from Whistleblowers.org, The New York TImes, The Washington Post, The Library of Congress and IMDB.com.
- Video Corner
VIDEO: Young artist focuses on gun violence through art
Eleven-year-old artist Charles Gitnick has created an exhibit that expresses his feelings about guns. His work is being displayed at an international art fair in Miami.
VIDEO: The world's worst 'selfie' snaps
People have been taking the "selfie" trend to the extreme, snapping pictures of themselves at the worst times and in the worst places. One girl, who took a photo of herself with a bridge jumper in the background, may just top the list.
VIDEO: Millions of social media credentials hacked
A massive social media hack has exposed more than 2 million usernames and passwords.
VIDEO: Mystery restaurant patron leaving thousands of dollars in tips
A mysterious patron is dining at various restaurants and bars, then leaving anywhere from $500 to $10,000 in tips.
VIDEO: Snow, ice aim for nation's frozen midsection
Heavy snow and ice could stretch from the Great Lakes to Oklahoma and Arkansas on Thursday, as parts of the region deal with an extreme cold snap.
VIDEO: Grinch not only 'rotter' at Christmas time
Christmas tree farmers fighting root rot may have found a hardy substitute. The Turkish fir is similar to Fraser fir and hails from the birthplace of Old Saint Nick himself.
VIDEO: Surfers ride 100-foot waves
Surf's up off the coast of Norte of Nazare, Portugal, where waves up to 100 feet tall were ridden after super storm St. Jude battered the European coast.
12 annoying songs of Christmas
It's that time of year, when Christmas songs fill shops, restaurants and your home. While anything on repeat can drive you mad, these 12 tunes are some of the most annoying.
VIDEO: Scary snowman prank strikes fear in shoppers
'The Scary Snowman Prank' returns for a third year to frighten people on the streets of Boston. Here's how one team of pranksters is turning the holiday season into something frightful.
VIDEO: Obama confronts heckler during immigration speech
President Barack Obama confronted a heckler during a speech on immigration Monday in San Francisco.
- More Video Corner Headlines
- VIDEO: Young artist focuses on gun violence through art