Patrick Thomas O'Brien

Credits

Cast Credits

Saved by the Bell (2020)

Guest starring as Mr. Dewey (4 episodes)

• Episode 2x08: The Gift (Nov 24, 2021)
• Episode 2x03: 1-900-Crushed (Nov 24, 2021)
• Episode 1x06: Teen-Line (Nov 25, 2020)
• Episode 1x03: The Bayside Triangle (Nov 25, 2020)
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It's Always Sunny in Philadelphia (2005)

Guest starring as Associate

• Episode 2x08: The Gang Runs for Office (Aug 3, 2006) [Co-Star]

Dr. Vegas (2004)

Guest starring as Burns

• Episode 1x03: Dead Man, Live Bet (Oct 8, 2004)

Phil of the Future (2004)

Guest starring as Mr. Fleet

• Episode 1x12: You Say Toe-Mato (Aug 13, 2004)

Carnivàle (2003)

Guest starring as Clark

• Episode 1x02: After the Ball Is Over (Sep 21, 2003)

L.A. Dragnet (2003)

Guest starring as Janitor

• Episode 1x02: The Big Ruckus (Feb 9, 2003) [Co-Star]

Monk (2002)

Guest starring as Mr. Donovan

• Episode 3x07: Mr. Monk and the Employee of the Month (Aug 6, 2004)

CSI: Crime Scene Investigation (2000)

Guest starring as Edward Cormier

• Episode 2x15: Burden of Proof (Feb 7, 2002)

Son of the Beach (2000)

Guest starring as Chip's Poopie

• Episode 3x14: Bad News, Mr. Johnson (3) (Oct 1, 2002)

Malcolm in the Middle (2000)

Guest starring as Dad Driver

• Episode 5x07: Christmas Trees (Dec 14, 2003)

Roswell (1999)

Guest starring as Minister

• Episode 3x06: To Have and To Hold (Nov 13, 2001) [Co-Star]

Sabrina: The Teenage Witch (1996)

Guest starring as James T. Walker

• Episode 1x20: Meeting Dad's Girlfriend (Apr 4, 1997) [Co-Star]

Guest starring as Cupid (2 episodes)

• Episode 2x17: The Equalizer (Feb 13, 1998)
• Episode 2x03: Dummy for Love (Oct 3, 1997)

Caroline in the City (1995)

Guest starring as Councilman Hardy

• Episode 1x13: Caroline and the Twenty-Eight-Pound Walleye (Jan 25, 1996)

Sliders (1995)

Guest starring as Jake

• Episode 4x17: Data World (Mar 19, 1999)

Babylon 5 (1993)

Guest starring as Cart Owner

• Episode 1x17: Legacies (Jul 20, 1994) [Co-Star]

Silk Stalkings (1991)

Guest starring as Mr. Petrie

• Episode 8x06: Hidden Agenda (Aug 30, 1998)

Home Improvement (1991)

Guest starring as "Ink" Ingram

• Episode 1x16: Jill's Birthday (Feb 4, 1992)

Baywatch (1989)

Guest starring as Tom (2 episodes)

• Episode 5x02: Livin' on the Fault Line (2) (Oct 3, 1994) [Co-Star]
• Episode 5x01: Livin' on the Fault Line (1) (Sep 26, 1994) [Co-Star]

Saved by the Bell (1989)

Guest starring as Mr. Dewey (4 episodes)

• Episode 4x19: Screech's Birthday (Nov 14, 1992)
• Episode 2x09: Jessie's Song (Nov 3, 1990)
• Episode 1x15: King of the Hill (Dec 9, 1989)
• Episode 1x13: The Election (Nov 18, 1989)
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The Wonder Years (1988)

Guest starring as Mr. Santa

• Episode 5x09: Christmas Party (Dec 11, 1991)

Married... with Children (1987)

Guest starring as Wally

• Episode 2x15: Build a Better Mousetrap (Jan 24, 1988)

Guest starring as Bob Thompson

• Episode 11x02: Children of the Corns (Oct 5, 1996)

Call to Glory (1984)

Starring as Patrick Thomas

Night Court (1984)

Guest starring as Man No. 2

• Episode 4x17: Christine's Friend (Feb 19, 1987)

Guest starring as Ernie Carter

• Episode 5x12: Dan, the Walking Time Bomb (Jan 7, 1988)

The Facts of Life (1979)

Guest starring as Mr. Copeland

• Episode 9x23: The Beginning of the End (Apr 30, 1988)