<Tr> <Th> Years active </Th> <Td> 1995--present </Td> </Tr> <P> Dean Gerard Winters (born July 20, 1964) is an American actor . </P> <P> He is known for his role as Ryan O'Reily on the HBO prison drama Oz, and has also appeared on such television series as Rescue Me, 30 Rock, and Law & Order: Special Victims Unit, as well as the character "Mayhem" in a series of Allstate Insurance commercials . Winters co-starred with Josh Duhamel in one season of the CBS Network cop drama series Battle Creek . </P> <P> Dean Winters was born in New York City and raised on Long Island . He has two brothers, actor Scott William Winters and writer Bradford Winters, and a sister, Blair Winters . </P>

Who plays mayhem on the allstate insurance commercials
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