Tom O'Brien
Known For
TV
Supernatural
Clark Adams
2005
TV
CSI: Crime Scene Investigation
Max Duncan
2000
TV
Smallville
Roger Nixon
2001
TV
The X-Files
Sgt. Louis Frisch
1993
TV
Stargate SG-1
Brian Vogler
1997
TV
JAG
Captain Cahill
1995
TV
Charmed
Zile
1998
TV
Murder, She Wrote
Jason Giles
1984
TV
L.A. Law
Justin Pregerson
1986
TV
21 Jump Street
Jake Whitaker / Danny Jacobson
1987
TV
The Twilight Zone
1985
TV
The Dead Zone
Dr. Jaeger
2002
TV
Moonlighting
Inmate
1985
TV
Early Edition
1996
TV
Early Edition
Kurt Porter
1996
TV
thirtysomething
1987
TV
Throb
1986
Film
Bones and All
Mr. Harmon (uncredited)
2022
TV
Timecop
1997
TV
Call to Glory
Patrick Thomas
1984
Filmography
2024FilmMcVeighas Gun Show Vendor2023FilmAlan and the Rulers of the Airas Greg2022FilmBones and Allas Mr. Harmon (uncredited)2006FilmAlien Incursionas Stucker2005TVSupernaturalas Clark Adams2004FilmThe Perfect Husband: The Laci Peterson Storyas Det. Frank Ross2003FilmD.C. Sniper: 23 Days of Fearas Lieutenant Jacobs2002TVThe Dead Zoneas Dr. Jaeger2001TVSmallvilleas Roger Nixon2000TVCSI: Crime Scene Investigationas Max Duncan1999FilmThe Astronaut's Wifeas Allen Dodge1999FilmFacadeas Bob Kelner1998TVCharmedas Zile1997TVTimecop1997TVStargate SG-1as Brian Vogler1996TVEarly Edition1995TVJAGas Captain Cahill1994FilmBaby Brokersas Frankie Dees1993FilmFor Love and Gloryas Christian Morgan1993TVThe X-Filesas Sgt. Louis Frisch1992FilmCrash Landing: The Rescue of Flight 232as Chris Porter1991TVSon of the Morning Staras Charlie Reynolds1990FilmStorm and Sorrowas John Roskelly1990FilmBar Girlsas Jack Gallagher1990FilmLove and Liesas Tom1990FilmFlashbackas Phil Prager1989FilmPhysical Evidenceas Matthew "Matt" Farley1988FilmThe Accusedas Larry1988FilmSatisfactionas Hubba1987TVthirtysomething1987TV21 Jump Streetas Jake Whitaker / Danny Jacobson1986FilmThe Big Easyas Bobby McSwain1986TVThrob1986FilmL.A. Law: Pilotas Justin Pregerson1986TVL.A. Lawas Justin Pregerson1985TVThe Twilight Zone1985TVMoonlightingas Inmate1984TVMurder, She Wroteas Jason Giles1984FilmCall to Gloryas Patrick Thomas1984TVCall to Gloryas Patrick Thomas