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Andy Griffith dies at age 86, celebrities react

'Andy Griffith ... His pursuit of excellence and the joy he took in creating served generations and shaped my life I'm forever grateful RIP Andy,' Tweeted Ron Howard, who played Griffith's character's son Opie Taylor on 'The Andy Griffith Show.' (Pictured: Ron Howard appears in a Twitter photo in 2012.) <span class=meta>(twitter.com/RealRonHoward)</span>
July 3, 2012 12:00:00 AM PDT