Patrick Thomas O'Brien
Actor
January 26, 1951 (75 years)
Patrick Thomas O'Brien is an American actor. He is perhaps best known for playing the role of Mr. Dewey, the math teacher from Saved by the Bell.
Movies & Shows on Plex
Filmography
| 2025 | Unholy Communion · as Father Doyle |
| 2023 | Rescuing Christmas · as Chuck |
| 2022 | Angry Neighbors · as Jeff JeffersonOn Plex |
| 2021 | The Last Son · as Bartender |
| 2021 | Sold Out · as WayneOn Plex |
| 2020 | Saved by the Bell (2020) · as Mr. Dewey |
| 2017 | Project Eden · as Stephen Erickson |
| 2016 | Love Always, Santa · as Ferris Wheel Operator |
| 2009 | Nobody · as Dr. Weinstein |
| 2008 | The Curious Case of Benjamin Button · as Dr. Rose |
| 2008 | Uncross the Stars · as Priest |
| 2005 | It's Always Sunny in Philadelphia · as Associate |
| 2004 | Dr. Vegas · as Burns |
| 2004 | Phil of the Future · as Mr. Fleet |
| 2004 | Win a Date with Tad Hamilton! · as Father Newell |
| 2004 | Drake & Josh · as Minister |
| 2003 | Intolerable Cruelty · as Bailiff |
| 2003 | Carnivàle · as Clark |
| 2003 | Dickie Roberts: Former Child Star · as Mr. Gertrude |
| 2003 | Inhabited · as Mr. KellyOn Plex |
| 2003 | L.A. Dragnet · as Janitor |
| 2002 | Catch Me If You Can · as Mr. Hendricks |
| 2002 | MDs · as Mr. Lumly |
| 2002 | Push, Nevada · as Cast |
| 2002 | Monk · as Brent Donovan |
| 2001 | Reba · as Mr. Devaney |
| 2001 | Dead Last · as JackOn Plex |
| 2001 | State of Grace · as Bill |
| 2000 | The Brainiacs.com · as Mr. GreenmailOn Plex |
| 2000 | CSI: Crime Scene Investigation · as Edward Cormier |
| 2000 | Gilmore Girls · as Brian's Dad |
| 2000 | |
| 2000 | Malcolm in the Middle · as Dad Driver |
| 1999 | Stuart Little · as Uncle Stretch |
| 1999 | Roswell · as Minister |
| 1999 | The West Wing · as Hanson |
| 1999 | Me and Will · as Hick TwoOn Plex |
| 1999 | Providence · as Dr. Smithers |
| 1998 | Pleasantville · as Roy |
| 1998 | Felicity · as Dan Waldron |
| 1998 | Dead Man on Campus · as Priest |
| 1998 | For Your Love · as Mr. SpencerOn Plex |
| 1997 | Working · as Carl |
| 1997 | Kiss the Girls · as Reporter |
| 1997 | Union Square · as Kenny |
| 1997 | Dharma & Greg · as Roger |
| 1997 | Pensacola: Wings of Gold · as CastOn Plex |
| 1997 | Eight Days a Week · as Erica's FatherOn Plex |
| 1996 | Sabrina, The Teenage Witch · as Cupid |
| 1996 | 7th Heaven · as Professor Valentine |
| 1996 | Boston Common · as Ron |
| 1995 | JAG · as Alfred |
| 1995 | Caroline in the City · as Councilman Hardy |
| 1995 | Maybe This Time · as James Howell |
| 1995 | The Naked Truth · as Lab Man |
| 1995 | Girl in the Cadillac · as Ticket Man |
| 1995 | Night Stand · as Neil |
| 1995 | Forget Paris · as Angry Fan |
| 1995 | Sliders · as Jake |
| 1995 | The Brady Bunch Movie · as Auctioneer |
| 1995 | The Wayans Bros. · as Mr. Webster |
| 1995 | Cybill · as Tweedy Man |
| 1994 | ER · as Carmichael |
| 1994 | The Boys are Back · as Teacher |
| 1994 | Wagons East · as StrangerOn Plex |
| 1994 | Hart to Hart: Home Is Where the Hart Is · as Desk Clerk |
| 1993 | Airborne · as Uncle Louis |
| 1993 | Lois & Clark: The New Adventures of Superman · as Barker |
| 1993 | Saved by the Bell: The New Class · as Mr. Dewey |
| 1993 | The John Larroquette Show · as Mr. Hunter |
| 1993 | Getting By · as Butler |
| 1993 | Babylon 5 · as Cart Owner |
| 1992 | Picket Fences · as John Vermette |
| 1992 | The Larry Sanders Show · as Carl Henckel |
| 1991 | Silk Stalkings · as Mr. PetrieOn Plex |
| 1991 | Marilyn and Me · as Casting DirectorOn Plex |
| 1991 | Step by Step · as Reverend |
| 1991 | Home Improvement · as Ink Ingram |
| 1991 | Switched at Birth (1991) · as Dr. Purchio |
| 1991 | Driven to Kill · as Mobsters |
| 1990 | The Great Los Angeles Earthquake · as Jim Allen |
| 1990 | Camp Cucamonga · as Virgil |
| 1990 | Babes · as Rusty |
| 1990 | Parker Lewis Can't Lose · as Mr. KubiacOn Plex |
| 1990 | Equal Justice · as Thornell Katz |
| 1989 | Dragnet (1989) · as Wally Tilson |
| 1989 | Family Matters · as Mr. Denton |
| 1989 | Life Goes On · as Father Mcmichaels |
| 1989 | Saved by the Bell · as Mr. Dewey |
| 1989 | UHF · as Satan |
| 1989 | BaywatchOn Plex |
| 1988 | The Wonder Years · as Mr. Santa |
| 1987 | |
| 1987 | Hooperman · as Man In Tie |
| 1987 | Married... with Children · as Wally |
| 1986 | Easy Street · as Don Martin |
| 1984 | 1st & Ten · as Anthony Smalss |
| 1984 | Night Court · as Ernie Carter |
| 1983 | Kenny Rogers as The Gambler: The Adventure Continues · as Jenkins |
| 1983 | Jennifer Slept Here · as Minister |
| 1982 | The Personals · as Jay |
| 1979 |