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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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|2013||Brooklyn Nine-Nine - (1 episode) as Detective Pembroke|
|2009||Today's Special as Steve|
|1999||Undercover Angel as Harrison Tyler|
|1997||Oz - (64 episodes) as Ryan O'Reily|