Michael O'Neill
Acting
Born 1947-05-29
Montgomery, Alabama, USA
103 credits
Read biography
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.
Not enough member ratings yet.
Sign in to rate.
Filmography
— top 60 of 103
The Mentalist
Grey's Anatomy
Criminal Minds
NCIS
Prison Break
CSI: Miami
S.W.A.T.
NCIS: Los Angeles
24
The X-Files
Sons of Anarchy
Tracker
War of the Worlds
The West Wing
JAG
Fringe
Scandal
Chicago Hope
ER
Ghost Whisperer
Without a Trace
Diagnosis: Murder
Tom Clancy's Jack Ryan
Boston Legal
The Resident
Numb3rs
Rizzoli & Isles
Crossing Jordan
This Is Us
Army Wives
The Practice
Fire Country
Bates Motel
The Unit
Shooter
Leverage
Boston Public
Happy's Place
Millennium
Roswell
Air
FlashForward
Close to Home
Ally McBeal
The Glades
11.22.63
Law & Order: LA
Outer Range
Rectify
Extant
Manhattan
Dallas Buyers Club
Traffic
Commander in Chief
Green Zone
Messiah
Bride Hard
LAX
The Shining
The Romanoffs
Track what you watch
DuckTrack members see which of these they have already watched,
right here on this page.
Create a free account
Comments
0 commentsNo comments yet. Sign in to be the first.