From Wikipedia, the free encyclopedia.Michael ONeill (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 Bartlets 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 Greys 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. ONeill 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.
Joe Dean
Film 2023
Bruce
Film 2008
Mr. Lusk
Film 1998
Film
Michael
Film 1989
Film 2024
Film 1998
Chaplain Rogers
Film 2018
Churchill
Film 1981
Chaplain David Kendricks
Film 2019
Ray Pasquerello
Film 1994
Dell Connelly
Film 2020
Sheriff Smyth
Film 2004
Christian
Film 2021
Arlo
Tv 2016
Commander Bradley
Tv 1995
Patrol Captain Van Gelder
Tv 1993
Philip Evans
Tv 1999
Tv 1994
Nolan
Tv 2005
Trent Staley
Tv 2010
Jonathan McKnight
Tv 2010
Richard Walsh
Tv 2001
Richard Welsh
Tv 2001
Alan Sparks
Tv 2014
CIA Director Keller
Tv 2009
Jeb Monroe
Tv 2010
Sheriff Buck O'Hara
Tv 1993
Nick Ford
Tv 2013
Psychiatrist
Tv 2014
Ron Butterfield
Tv 1999
Anthony Franklin
Tv 2008
Sheriff Nelson
Tv 2008
Gary Clark
Tv 2005
Arliss Price
Tv 2016
Tv 1994
Pete Burton
Tv 2006
Senator Roland Foulkes
Tv 2013
Sheriff Velchik
Tv 2008
Lonnie Mencken
Tv 2012
Joshua Williams
Tv 2018
Herb Stanton
Tv 2005
Ret. U.S. Army General Richard Collins
Tv 2009
Riley McCallister
Tv 2003
Col. Ken Kilner
Tv 1994
Congressman Wilcox
Tv 2005
Ron Cheals
Tv 2006
Ray Brooks
Tv 2016
Senator Mitchell Chapin
Tv 2018
Det. Yarbough
Tv 2005
Harlan Denbo
Tv 2022
Judge Pettigrew
Tv 2022
Judge Roy
Tv 2008
Ron Hopkins
Tv 2018
Thomas Shannon
Tv 2002
Daniel Edwards (uncredited)
Tv 1997
Carl Luca
Tv 2017
Chris Benz
Tv 2001
Cameron Collier
Tv 2020
Alonso Mathews
Tv 2004
Jim Jackoway
Tv 2024
County Prosecutor Calvin Smith
Tv 1996