Groupon head Andrew Mason is the latest CEO to make a shocking departure.
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Groupon CEO Andrew Mason was fired Thursday from the company he co-founded following disastrous financial losses. But Mason didn't go out without a fight, raising eyebrows with his email to employees that began: "I've decided that I'd like to spend more time with my family. Just kidding -- I was fired today." Here are some other shocking CEO departures and downfalls, some for far more nefarious reasons than others.