Dean Winters

Dean Winters is an American actor. Best known for his role as Ryan OReily on the HBO prison drama Oz, he has also appeared on such television series as Rescue Me,Rock, and Law amp Order Special Victims Unit, as well as the character Mayhem in a series of Allstate Insurance commercials. Winters costarred with Josh Duhamel in one season of the CBS Network series cop drama Battle Creek.

Winters was born in New York City, New York. He has three siblings actor Scott William Winters, writer Bradford Winters, and Blair Winters. He grew up on Long Island and spent his teenage years in Scottsdale, Arizona. He attended the Jesuit Brophy College Preparatory school in Phoenix, graduating in 1982. He graduated from Colorado College.

Source: Wikipedia