Michael Ontkean
Year Title Role Notes
1959 Hudson 's Bay Jeremy Warrant Episode : Pierre 's Three Evils
1970 Ironside Man Episode : Noel 's Gon na Fly
1970 Dan August Mike Foschke Episode : The Soldier
1971 Walt Disney 's Wonderful World of Color Alcide Episode : The Boy from Dead Man 's Bayou
1971 The Partridge Family Lester Braddock Episode : Not With My Sister , You Do n't !
1971 Longstreet David De Carie Episode : So , Who 's Fred Hornbeck ?
1972-1974 The Rookies Officer Willie Gillis 47 episodes
1979 Tales of the Unexpected Tommy Episode : The Man from the South
1989 The Hitchhiker Gordon Brooks Episode : Square Deal
1990-1991 Twin Peaks Sheriff Harry S. Truman 30 episodes
1991 In a Child 's Name Kenneth Taylor Miniseries
1994 Family Album Ward Thayer Miniseries
1999 PSI Factor : Chronicles of the Paranormal John Doe / Wesley Addison Episode : John Doe
1997-2000 The Outer Limits Dr. Field / Dr. Charles McCamber 2 episodes
2004-2005 North Shore Gordon Matthews 4 episodes
2008 Sophie Victor Hearst 3 episodes ( Final television role to date )
Filmography -- Television
Michael Leonard Ontkean (born January 24, 1946) is a retired Canadian actor. Born and raised in Vancouver, British Columbia, Ontkean relocated to the United States to attend the University of New Hampshire on a hockey scholarship before pursuing a career in acting in the early 1970s. He initially came to prominence portraying Officer Willie Gillis on the crime drama series The Rookies from 1972-74, followed by lead roles in the hockey sports comedy film Slap Shot (1977) and the romantic comedy Willie & Phil (1980). In 1982, he had a starring role opposite Harry Hamlin and Kate Jackson in the drama Making Love, in which he portrayed a married man who comes to terms with his homosexuality. Ontkean continued to appear in films, such as Clara's Heart (1988) and Postcards from the Edge (1990) before being cast as Sheriff Harry S. Truman on David Lynch's Twin Peaks (1990-1991), the role for which he is probably best known.