Michael O'Neill

Acting

Michael O'Neill

Born 1947-05-29 · Montgomery, Alabama, USA

​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.

Acting credits

War of the Worlds poster
4.0

Will Radford is a top analyst for Homeland Security who tracks potential threats through a mass surveillance program, until one day an attack by an unknown entity leads him to question whether the government is hiding something from him... and from the rest of the world.

War of the Worlds

2025

Seabiscuit poster
7.1

True story of the undersized Depression-era racehorse whose victories lifted not only the spirits of the team behind it but also those of their nation.

Seabiscuit

2003

Air poster
7.3

Discover the game-changing partnership between a then undiscovered Michael Jordan and Nike's fledgling basketball division which revolutionized the world of sports and culture with the Air Jordan brand.

Air

2023

Dallas Buyers Club poster
7.9

Loosely based on the true-life tale of Ron Woodroof, a drug-taking, women-loving, homophobic man who in 1986 was diagnosed with HIV/AIDS and given thirty days to live.

Dallas Buyers Club

2013

Traffic poster
7.1

An exploration of the United States of America's war on drugs from multiple perspectives. For the new head of the Office of National Drug Control Policy, the war becomes personal when he discovers his well-educated daughter is abusing cocaine within their comfortable suburban home. In Mexico, a flawed, but noble policeman agrees to testify against a powerful general in league with a cartel, and in San Diego, a drug kingpin's sheltered trophy wife must learn her husband's ruthless business after he is arrested, endangering her luxurious lifestyle.

Traffic

2000

Sea of Love poster
6.6

Seen-it-all New York detective Frank Keller is unsettled - he has done twenty years on the force and could retire, and he hasn't come to terms with his wife leaving him for a colleague. Joining up with an officer from another part of town to investigate a series of murders linked by the lonely hearts columns he finds he is getting seriously and possibly dangerously involved with Helen, one of the main suspects.

Sea of Love

1989

Bride Hard poster
5.5

Sam is a secret agent whose toughest mission to date is pleasing her bride-to-be best friend at a lavish destination wedding. When a team of mercenaries crashes the party and takes the guests hostage, Sam is thrown into a fight unlike any before — one where she can’t risk blowing her cover or ruining the big day. As she takes on the bad guys in a high-stakes battle disguised as a fairy-tale affair, she realizes the real threat might be closer than she thinks.

Bride Hard

2025

Green Zone poster
6.5

During the U.S.-led occupation of Baghdad in 2003, Chief Warrant Officer Roy Miller and his team of Army inspectors are dispatched to find weapons of mass destruction believed to be stockpiled in the Iraqi desert. Rocketing from one booby-trapped and treacherous site to the next, the men search for deadly chemical agents but stumble instead upon an elaborate cover-up that threatens to invert the purpose of their mission.

Green Zone

2010

Dreamcatcher poster
5.7

Four childhood friends reunite for a hunting trip in the Maine woods, bound by a psychic force born from a childhood friend's dreamcatcher. They find themselves caught in a grotesque alien invasion that twists memory, sanity and reality into something far more sinister.

Dreamcatcher

2003

Transformers poster
6.8

Young teenager Sam Witwicky becomes involved in the ancient struggle between two extraterrestrial factions of transforming robots – the heroic Autobots and the evil Decepticons. Sam holds the clue to unimaginable power and the Decepticons will stop at nothing to retrieve it.

Transformers

2007

J. Edgar poster
6.2

As the face of law enforcement in the United States for almost 50 years, J. Edgar Hoover was feared and admired, reviled and revered. But behind closed doors, he held secrets that would have destroyed his image, his career, and his life.

J. Edgar

2011

Nothing but the Truth poster
6.9

When reporter Rachel Armstrong writes a story that reveals the identity of a covert CIA operative, the government demands that Rachel reveal her source. She defies the special prosecutor and is thrown in jail. Meanwhile, her attorney, Albert Burnside argues her case all the way to the U.S. Supreme Court.

Nothing but the Truth

2008

The Legend of Bagger Vance poster
6.6

World War I has left golfer Rannulph Junuh a poker-playing alcoholic, his perfect swing gone. Now, however, he needs to get it back to play in a tournament to save the financially ravaged golf course of a long-ago sweetheart. Help arrives in the form of mysterious caddy Bagger Vance.

The Legend of Bagger Vance

2000

Secondhand Lions poster
7.2

The comedic adventures of an introverted boy left on the doorstep of a pair of reluctant, eccentric great-uncles, whose exotic remembrances stir the boy's spirit and re-ignite the men's lives.

Secondhand Lions

2003

Jennifer Eight poster
6.1

John Berlin, a big-city cop from LA moves to a small-town police force and immediately finds himself investigating a murder. Using theories rejected by his colleagues, Berlin meets a young blind woman named Helena, whom he is attracted to. Meanwhile, a serial killer is on the loose—and only John knows it.

Jennifer Eight

1992

Lorenzo's Oil poster
7.1

Lorenzo Odone, a Virginia 5-year-old, develops a degenerative nerve disease so rare that nobody is working on a cure, so his parents decide to immerse themselves in research and tackle the problem themselves.

Lorenzo's Oil

1992

Ghost Story poster
6.0

Four successful elderly gentlemen, members of the Chowder Society, share a gruesome, 50-year-old secret. When one of Edward Wanderley's twin sons dies in a bizarre accident, the group begins to see a pattern of frightening events developing.

Ghost Story

1981

The Sunchaser poster
6.3

A young half-Navajo convict dying of cancer forces a yuppie doctor to drive him to a magic healing lake.

The Sunchaser

1996

The Mod Squad poster
4.4

Three youthful delinquents escape conviction for their crimes by teaming with the LAPD.

The Mod Squad

1999

ATF poster
5.8

In the wake of the tragic events at Waco, Texas where an armed conflict with armed militiamen broke out, agents of the federal government's Alcohol, Tobacco, and Firearms (ATF) carry out a clandestine mission within another militia operation that is possibly involved in the sales of guns and the murder of an agent. Agent Robin O'Brien infiltrates the operation against her director's orders. When events start unraveling and an FBI agent threatens to take over the operation and start a military action, the ATF agents have to apply what they learned from Waco to save another blood bath.

ATF

1999

Cold Call poster
NR

Christian, a brilliant businessman, deal-maker, and self-proclaimed master-of-the-universe, receives a phone call and an offer for which he can negotiate no terms.

Cold Call

2021

Indivisible poster
6.9

Upon returning from serving in the U.S. Army, Chaplain Darren Turner faces a crisis that shatters his Family and Faith in God but through the help of his fellow soldiers, he returns to his faith and family

Indivisible

2018

Around the Bend poster
5.9

A tale of four generations of men, all of whom have had their offspring at a young age: a great-grandfather, a grandfather, a father in his twenties and a son who is about 7 years old. When the oldest member passes away, the trio heads out on the road together in the Southwest to search out an old family secret that connects to their past.

Around the Bend

2004

Bushwhacked poster
5.4

A inept courier realises he has been used by criminals to deliver money. On the run from both the criminals and police, he poses as a Scout leader and leads a scout group on a hike through the mountains.

Bushwhacked

1995

Behind the camera