PersonMichael Ontkean7 credits in the catalogue: acting.On the wikisTwin Peaks WikiActingThe Rookies1972Officer Willie GillisPickup on 1011972ChuckSlap Shot1977Ned BradenMaking Love1982ZachTwin Peaks1990Sheriff Harry S. TrumanPostcards from the Edge1990Robert MunchThe Descendants2011Cousin Milo