Ano	Filme / Programa de TV / Outro	Função
2024	Better Off
2023	Um Conto Fatal	Roger Evans
2020	Upload: Realidade Virtual	David Choak
2020	50 States of Fright	Frank
2019	Phil	Father Grant
2019	As Sombras Que Nos Seguem	Mr. M
2018	Maus Momentos no Hotel Royale	Judge Gordon Hoffman
2018	O Mundo Sombrio de Sabrina	Methuselah
2018	Perda Total	Ray - Security
2018	The Doctor's Case	Doctor Watson
2017	Death Note	Radio Host
2017	Residue	Lamont
2016	Abduct	Zane
2016	2BR02B: To Be or Naught to Be	Granddad
2015	Signed, Sealed, Delivered: Truth Be Told	Harper
2015	Signed, Sealed, Delivered: The Impossible Dream	Harper
2015	The Real 'X-Files'?	Himself
2014	Focus	Mr. Grant
2013	Stonados	Ben
2013	Singularity Principle	Lawrence Cason
2012	O Homem das Sombras	Sheriff Chestnut
2012	Continuum	Future Alec Sadler
2012	Entrega Mortal	Dr. Willhelm
2012	The Mountain Runners	Henry Engberg
2011	A Criatura da Montanha	William Walsh
2011	Rise of the Damned	Doctor
2010	Caprica	Minister Chambers
2010	A Hora do Arrepio	Plumberg
2010	A Hora do Arrepio	Grandfather
2010	Alvo Humano
2010	Medium Raw	Dr. Robert Parker
2010	Amazon Falls	Calvin
2009	Contaminação	Ted
2009	Punhos de Aço	Veltz
2009	Sombras de um Desejo	Hypnotist
2009	Something Evil Comes	Mr. Dutton
2008	Passageiros	Jack
2008	Antologia do Medo	Father Chris
2008	Reverse	Chris
2007	Os Mensageiros	Colby Price
2007	Numb	Peter Milbank
2007	Masters of Science Fiction
2007	Na Mira da Justiça	Senator Garland Wolf
2006	Almas Gêmeas	Dr. Lucas Bryant
2006	Tempestade Sombria	General Killion
2006	The Secret of Hidden Lake
2006	Her Fatal Flaw	Richard O'Brien
2005	Sobrenatural	College Professor
2005	Robson Arms
2005	Max Rules: Adventures of a Super Spy	Rick Brinkley
2005	Tilt	Father Luke
2004	Snakehead Terror	Doc Jenkins
2004	The Cradle Will Fall	Alex Myerson
2004	Packing Up	Jenkins
2004	The Murdoch Mysteries: Except the Dying	Alderman Godfrey Shepcote
2002	Saint Sinner	Father Michael
2002	100 Days In The Jungle	Ambassador Shear
2002	Aftermath	Deputy Director Edwards
2001	Smallville: As Aventuras do Superboy	William Tate
2001	O Império (do Besteirol) Contra-Ataca	Cigarette Smoking Man (uncredited)
2001	The Proposal	Agent Frank Gruning
2001	Mindstorm	Parish
2001	MythQuest	Drossos
2001	Broken Saints	Benjamin Palmer (voice)
2001	Anthrax	Tye Crow
2001	Science Of Death	Narrator
2000	Andrômeda	Professor Logitch
2000	Murder Most Likely
2000	Perpetrators of the Crime	Henderson
2000	Becoming Dick	Dr. Hardwin
2000	The Fearing Mind	Mitchell Colfax
1999	Killing Moon	Ed
1998	Arquivo X: O Filme	The Cigarette-Smoking Man
1998	First Wave	Sagon
1998	Por Dentro do Arquivo X	Himself
1998	Um Cruzeiro Para o Inferno	Dr. Norman Ellisy
1997	Stargate SG-1	Damaris
1996	Inesquecível	Doctor
1996	Poltergeist: The Legacy	Dr. Bill Nigel
1995	Sliders: Dimensões Paralelas	Prof. Myman
1995	The Outer Limits	John Wymer
1995	The Outer Limits	Dr. Frank Biemler
1995	The Outer Limits	Ed
1995	Dangerous Intentions	Group Leader
1995	Circumstances Unknown	Gene Reuschel
1995	When the Vows Break	Dr. Alexander
1995	Justiça em Família	Police Chief
1994	Correndo Perigo	Huddleston
1994	Heart of a Child	Vern
1993	Arquivo X	Cigarette Smoking Man
1993	Arquivo X	Cancer Man
1993	Arquivo X	SS Oberfuehrer / Smoking Man
1993	Arquivo X	CGB Spender
1993	Arquivo X	Cigarette Smoking Man / True Name Carl Gerhard Busch
1992	Nightmare Cafe	Doctor
1991	A Profecia IV: O Despertar	Lawyer (uncredited)
1991	Disfarce Perigoso	Dr. Atkins
1991	The Commish
1990	It: Uma Obra Prima do Medo	Mr. Gedreau
1990	Anything to Survive	Dr Reynolds
1989	Olha Quem Está Falando	Drug Doctor
1988	Midnight Matinee	Heath Harris
1987	Anjos da Lei	Mr. Weidlin
1987	Anjos da Lei	Mr. Wickenton
1987	Anjos da Lei	Judge Harrison
1987	O Homem da Máfia
1987	Deadly Deception	Lawyer
1987	Sworn to Silence	Peter Massio
1985	MacGyver - Profissão: Perigo	Judge
1985	Head Office	University Dean
1985	Danger Bay	Norris
1984	Águia de Fogo	F.I.R.M. Official
1984	Águia de Fogo	Newman
1983	Na Hora da Zona Morta	Ambulance Driver

Ano	Filme / Programa de TV / Outro	Função
—	49th & Main	Creator
2008	Reverse	Editor
2008	Reverse	Writer
2008	Reverse	Director
2004	Packing Up	Writer
2004	Packing Up	Executive Producer
2004	Packing Up	Director
2004	Packing Up	Editor
2003	Exchange	Director
2003	Exchange	Writer
2003	Exchange	Editor
2003	Exchange	Producer
2003	Exchange	Executive Producer
1993	Arquivo X	Writer

William B. Davis