John Henry Diehl is an American character actor. Noted for his work in avant-garde theater, Diehl has performed in more than 140 films and television shows, including Land of Plenty, Stripes, City Limits, Nixon, Jurassic Park III and the TV series Miami Vice, The Shield, and Point Pleasant. Diehl has "largely avoided the typecasting that is an accepted part of most character actors' careers." He has been a member of The Actors Studio since 2004.
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