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Charlie Sheen: A timeline of troubles

In the summer of 1990, Charlie Sheen entered rehab for the first time for alcohol addiction. He told USA Today at the time that he intended to continue following the 12-step program. His engagement to actress Kelly Preston ended later that year, following reports that Sheen had accidentally shot her in the arm. (Pictured: Charlie Sheen in a still from his 1984 movie, 'Red Dawn.') <span class=meta>(Photo courtesy of Metro-Goldwyn-Mayer Studios Inc.)</span>
April 19, 2011 2:10:14 PM PDT