I do recall Janet Cook. Two others are Patricia Smith and Mike Barnicle of the Boston Globe.
http://www.boston.com/news/daily/19/barnicle.htm
In 1980, Cooke joined the "Weeklies" section staff of the Washington Post under editor Vivian Aplin-Brownlee.
Cooke falsely claimed she had a degree from Vassar College, a master's degree from the University of Toledo, and had received a journalism award while at the Toledo Blade.
While Cooke had attended Vassar for a year, she had only received a bachelor's degree from Toledo.
(As a legitimate Affirmative Action hire she did not have to claim she was part Indian.)
"Jimmy's World"
In an article titled "Jimmy's World", which appeared in the Post on September 28, 1980, Cooke wrote a gripping profile of the life of an 8-year-old heroin addict. She described the "needle marks freckling the baby-smooth skin of his thin, brown arms."
The story engendered much sympathy among readers, including Marion Barry, then mayor of Washington, D.C. He and other city officials organized an all-out police search for the boy, which was unsuccessful and led to claims that the story was fraudulent.
Barry, responding to public pressure, lied and claimed that Jimmy was known to the city and receiving treatment; he was announced dead shortly after.
(Another guy named Barry lied! GASP!)
Fallout
Although some within the Post doubted the story's veracity, the Post defended it and assistant managing editor Bob Woodward (himself no stranger to composite figures) submitted the story for the Pulitzer Prize. Cooke was awarded the Pulitzer Prize for Feature Writing on April 13, 1981.
When the editors of the Toledo Blade, where Cooke had previously worked, read her biographical notes, they noticed a number of discrepancies. Further investigation revealed that Cooke's academic credentials were inflated. Pressured by the editors of the Post, Cooke confessed her guilt.
Two days after the prize had been awarded, Post publisher Donald E. Graham held a press conference and admitted that the story was fraudulent. The editorial in the next day's paper offered a public apology.
Assistant managing editor Woodward said (Hey Bernstein and I did it with Deep Throat so what's the big deal, why let a little thing like truth get in the way of a great story?) at the time: "I believed it, we published it. Official questions had been raised, but we stood by the story and her. Internal questions had been raised, but none about her other work. The reports were about the story not sounding right, being based on anonymous sources, and primarily about purported lies [about] her personal life [told by three reporters], two she had dated and one who felt in close competition with her. I think that the decision to nominate the story for a Pulitzer is of minimal consequence. I also think that it won is of little consequence. It is a brilliant storyfake and fraud that it is. It would be absurd for me or any other editor to review the authenticity or accuracy of stories that are nominated for prizes."
(And that boys and girls is the essence of MSM news reporting. Why let a little thing like the truth deter from a great story?)
Cooke resigned and returned the Prize. She appeared on the Phil Donahue show in January 1982, and said that the high-pressure environment of the Post had corrupted her judgment. (In other words, they MADE me do it!)She said that her sources had hinted to her about the existence of a boy such as Jimmy, but unable to find him, she eventually created a story about him in order to satisfy her editors. (They MADE me do it.)