After losing the Eastern Conference Finals to the Orlando Magic in a series the Cleveland Cavaliers were heavily favored to win, LeBron James walked off the court without shaking hands with the other team and refused to be interviewed after the game -- thereby quitting on the good guy image he worked so hard to cultivate and the city that depended on him so much.
In April, Viggo Mortensen announced he was done with movies because his schedule was too hectic. Yes, flying to exotic countries all over the world on someone else's dime is so exhausting. (To be fair, being in Los Angeles, Japan, Korea, Poland and the UK all in one week can take a lot out of a guy.)
The late President Richard Milhous Nixon was the only man in the history of the country to resign the presidency of the United States. We'll refrain from flat-out calling him Quitter McGee, as we don't like to speak ill of the dead - and because that whole Watergate scandal kinda forced his hand.
Controversial stand-up comedian Andrew Dice Clay quit a 2006 interview on CNN with flair - and a slew of profanity. After one of the interview questions offended his delicate sensibilities, Clay stormed off the set, swearing a blue streak. We're going to guess he'll never be invited back.
Brett Favre was the starting quarterback for the Green Bay Packers until he retired in 2007. And by retired, we mean decided to retire, thought better of it, went back, disrupted the career of the new QB the Packers had chosen, arranged a trade with the NY Jets, had a terrible season and a shoulder injury, and retired again. Now he's in talks with the Minnesota Vikings. That was a mouthful.
Cher went out with a bang in 2005, ending a 3-year-long 'Farewell Tour' as the most successful tour by a female solo artist at the time. Of course, proving that the words "farewell" and "tour" are meaningless when combined, Cher returned to the stage in 2008 at Caesars Palace in Las Vegas and continues to perform.
One of the most legendary actresses of the 20th century (and the most beautiful woman in the world, according to the Guiness Book of World Records), Greta Garbo still just wanted to be alone. Garbo made her last picture in 1941, then moved to NYC and lived the life of a near-recluse. When Garbo retires, Garbo really retires.
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Now that he's quit running Def Jam Recordings, Jay-Z can spend a little more time cozying up to wife Beyonce. Maybe her alter ego Sasha Fierce forced Jay to cut down the workload.
In 1940, a promising young actor named Ronald Reagan tackled the role of George "The Gipper" Gipp in the film 'Knute Rockne, All American' - apparently, he decided to give up acting at try his hand at some other career. Politics, or something.
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The Oscar-nominated actor Joaquin Phoenix retired from movies and has decided to try his talents out in the music world - as a hip-hop artist. In addition to the sheer insanity of the decision and his beyond-erratic public appearances surrounding it... anyone who saw 'Walk the Line' would tell him he's better off with country.