Michael O'Neill

Michael O'Neill

​From Wikipedia, the free encyclopedia. Michael O'Neill (born May 29, 1951) is an American actor. With a career stretching through three decades, he usually portrays senior law enforcement or military officers. He is perhaps best known for his role as Special agent Ron Butterfield, the head of President Josiah Bartlet's Secret Service detail, on The West Wing. He played CTU Administrative Director Richard Walsh in the first two episodes of 24. He played Sgt. Maj. Ron Cheals in the CBS action-drama series The Unit. He starred in the Season Six 2 part Finale of Grey's Anatomy as the broken widower who holds the hospital hostage with a 9mm while pursuing the doctors responsible for unplugging his wife. His most notable film performances occur in Seabiscuit, Secondhand Lions, Transformers, Dancer, Texas Pop 81, Traffic, Sea of Love, A Quiet Little Marriage, Nothing But the Truth, and Green Zone. O'Neill graduated from Auburn University in 1974. After attending Auburn he spent time under the tutelage of actor Will Geer and his daughter, Ellen, at Theatricum Botanicum in Los Angeles before moving to New York to pursue his career there.
Known For: Acting
Birthday: 1947-05-29
Place of Birth: Montgomery, Alabama, USA
Also Known As:

Movies List of Michael O'Neill

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Transformers

2007 Movie
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Green Zone

2010 Movie
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Dreamcatcher

2003 Movie
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Air

2023 Movie
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Around the Bend

2004 Movie
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Blind Justice

1994 Movie
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Dancer, Texas Pop. 81

1998 Movie
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Dallas Buyers Club

2013 Movie
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For Their Own Good

1993 Movie
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An Unremarkable Life

1989 Movie
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Bride Hard

2024 Movie
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Bushwhacked

1995 Movie
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The Grim Sleeper

2014 Movie
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Virtual Obsession

1998 Movie
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Traffic

2000 Movie
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Nothing But the Truth

2008 Movie
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ATF

1999 Movie
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Crazy

2008 Movie
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Secondhand Lions

2003 Movie
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Indivisible

2018 Movie
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The Sunchaser

1996 Movie
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Jennifer Eight

1992 Movie
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Danger One

2018 Movie
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Ghost Story

1981 Movie
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Sea of Love

1989 Movie
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Clemency

2019 Movie
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Lorenzo's Oil

1992 Movie
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Beyond Betrayal

1994 Movie
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J. Edgar

2011 Movie
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American Crime

2004 Movie
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Seabiscuit

2003 Movie
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The Mod Squad

1999 Movie
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Cold Call

2021 Movie
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Awake to Danger

1995 Movie