Birthday: July 20th, 1964Place of Birth: New York City, New York, USA
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Dean Winters (born July 20, 1964) is an American actor, who has portrayed Ryan O'Reily on HBO's Oz, Johnny Gavin on FX Network's Rescue Me, and Dennis Duffy on NBC's 30 Rock. He also currently portrays "Mayhem" in Allstate commercials.
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