Personal Info
Known For
Acting
Born
January 26, 1951 (age 75)
Place of Birth
Wisconsin, USA
Also Known As
Patrick T. O'Brien
Patrick O'Brien
P. O'Brien
Patrick Thomas O'Brien
Known For
TV
CSI: Crime Scene Investigation
Edward Cormier
2000
TV
Monk
Brent Donovan
2002
TV
Gilmore Girls
Brian's Dad
2000
TV
Malcolm in the Middle
Dad Driver
2000
TV
ER
Carmichael
1994
TV
Married... with Children
Wally
1987
TV
Married... with Children
Bob Thompson
1987
TV
The West Wing
Hanson
1999
TV
It's Always Sunny in Philadelphia
Associate
2005
TV
Sabrina, the Teenage Witch
Index Man
1996
TV
Sabrina, the Teenage Witch
Cupid
1996
TV
Baywatch
1989
TV
Family Matters
Mr. Denton
1989
TV
Babylon 5
Cart Owner
1994
TV
The Wonder Years
Mr. Santa
1988
TV
Night Court
Ernie Carter
1984
TV
Home Improvement
Ink Ingram
1991
TV
Lois & Clark: The New Adventures of Superman
Barker
1993
TV
Felicity
Dan Waldron
1998
TV
Step by Step
Reverend
1991
Filmography
2025FilmUnholy Communionas Father Doyle2023FilmRescuing Christmasas Chuck2021FilmSold Outas Wayne2020TVSaved by the Bellas Mr. Dewey2018FilmFairy Tailas Priest2008FilmThe Curious Case of Benjamin Buttonas Dr. Rose2008FilmUncross the Starsas Priest2005TVIt's Always Sunny in Philadelphiaas Associate2004FilmWin a Date with Tad Hamilton!as Father Newell2004TVDrake & Joshas Minister2003FilmIntolerable Crueltyas Bailiff2003TVCarnivàleas Clark2003FilmDickie Roberts: Former Child Staras Mr. Gertrude2003FilmInhabitedas Mr. Kelly2002FilmCo-Incidenceas Towny2002FilmCatch Me If You Canas Mr. Hendricks2002TVMonkas Brent Donovan2001TVRebaas Mr. Devaney2001TVState of Graceas Bill2000TVCSI: Crime Scene Investigationas Edward Cormier2000TVGilmore Girlsas Brian's Dad2000TVSon of the Beach2000TVMalcolm in the Middleas Dad Driver1999FilmStuart Littleas Uncle Stretch1999TVRoswellas Minister1999TVThe West Wingas Hanson1998TVFelicityas Dan Waldron1998FilmPleasantvilleas Roy1998FilmDead Man on Campusas Priest1997TVWorkingas Carl1997FilmKiss the Girlsas Reporter1997TVUnion Squareas Kenny1997TVDharma & Gregas Roger1997FilmEight Days a Weekas Erica's Father1996TVSabrina, the Teenage Witchas Index Man1996TV7th Heavenas Professor Valentine1996TVBoston Commonas Ron1995TVCaroline in the Cityas Councilman Hardy1995TVThe Naked Truthas Lab Man1995FilmForget Parisas Angry Fan1995TVSlidersas Jake1995FilmThe Brady Bunch Movieas Auctioneer1995TVCybillas Tweedy Man1994TVERas Carmichael1994FilmWagons East!as Stranger1994TVBabylon 5as Cart Owner1993FilmAirborneas Uncle Louis1993TVLois & Clark: The New Adventures of Supermanas Barker1993TVSaved by the Bell: The New Classas Mr. Dewey1993TVThe John Larroquette Showas Mr. Hunter1992TVThe Larry Sanders Showas Carl Henckel1991FilmMarilyn and Meas Casting Director1991TVStep by Stepas Reverend1991TVHome Improvementas Ink Ingram1990FilmCamp Cucamongaas Virgil1990TVParker Lewis Can't Loseas Mr. Kubiac1989TVFamily Mattersas Mr. Denton1989TVSaved by the Bellas Mr. Dewey1989FilmUHFas Satan1989TVBaywatch1988TVThe Wonder Yearsas Mr. Santa1987TVJake and the Fatman1987TVMarried... with Childrenas Wally1984TVNight Courtas Ernie Carter1982FilmThe Personalsas Jay1979TVThe Facts of Life—FilmThe Autopsy of Albert Kemperas Coroner