Donald Sinclair Davis (August 4, 1942 – June 29, 2008) was an American actor, artist, and former military officer. He began his career as a theater professor before transitioning to acting. He became known for his role as General George Hammond in Stargate SG-1 (1997–2007) and Major Garland Briggs in Twin Peaks (1990–1991). Davis appeared in numerous films, including A League of Their Own (1992), The Fan (1996), The 6th Day (2000), and Far Cry (2008). He often portrayed authority figures and military characters, reinforced by his real-life experience as a U.S. Army captain. In addition to acting, he was a talented painter and sculptor. He studied theater and art at Southwest Missouri State College and later earned a Ph.D. in Theater Arts from Southern Illinois University. Davis was married to Ruby Fleming-Davis and remained an influential presence in film and television until his passing.

Filmography

• 2014Twin Peaks: The Missing Pieces — Maj. Garland Briggs
• 2010Woodshop — Principal Jamison
• 2009Stargate SG-1: Children of the Gods — Major General George Hammond, In Memory Of
• 2009The Uninvited — Mr. Henson
• 2009Wyvern — Colonel Travis Sherman
• 2008Beyond Loch Ness — Neil Chapman
• Burn Up — The Man
• 2008Far Cry — General Roderick
• 2008Stargate: Continuum — Lieutenant General George Hammond
• The Guard — Chuck
• 2008The Unquiet — Bud Rollins
• To Love and Die — Hal
• 2008Vipers — Dr. Silverton
• 2007Beneath — Joseph
• Flash Gordon — Mr. Mitchell
• 2007The Still Life — Mr. Fernot
• Psych — Camden McCallum Sr.
• 2005Child of Mine — Police Chief
• Supernatural — Trotter
• 2004American Meltdown — NRC Carl Mansfield
• 2004G.I. Joe: Valor vs. Venom — Wild Bill (voice)
• 2004Miracle — Bob Fleming
• 2004Savage Island — Keith Young
• Stargate Atlantis — Major General George Hammond
• 2003G.I. Joe: Spy Troops — Wild Bill (voice)
• NCIS — Control Officer
• 2002Deadly Little Secrets — The Chief
• Just Cause — Thorton
• The Dead Zone — Senator Harlan Ellis
• The Twilight Zone — Dr. Tate
• 2001Hostage Negotiator — Alexander Daniels
• 2001Suspicious River — Golf Shirt Man
• The Chris Isaak Show — Del
• Andromeda — Avineri
• 2000Best in Show — Mayflower Best in Show Judge
• 2000The 6th Day — Cardinal de la Jolla
• 2000The Artist's Circle
• Atomic Train — General Harlan Ford
• The West Wing — Don Butler
• 1997Con Air — Man In Car
• 1997Dad's Week Off — Hank
• Honey, I Shrunk the Kids: The TV Show — Mr. Washington
• Stargate SG-1 — George Hammond
• 1997The Stepsister — Detective Church
• 1997Tricks — Man
• 1997Volcano: Fire on the Mountain — Mayor Bob Hart
• 1996Alaska — Sergeant Grazer
• 1996Brothers of the Frontier — Byron Holcomb
• In Cold Blood — Roy Church
• 1996Kidz in the Wood — Principal
• Poltergeist: The Legacy — Harold Taggart
• 1996Shadow of a Doubt — Kevin Carroll Sr.
• 1996The Angel of Pennsylvania Avenue — Dewey
• 1996The Fan — Stook
• 1996The Limbic Region — Chief Payne
• 1996The Prisoner of Zenda, Inc. — Colonel Zapf
• The Sentinel — Wilton Fisker
• 1995A Dream is a Wish Your Heart Makes: The Annette Funicello Story — Glen Holt
• 1995A Family Divided — Detective Larson
• 1995Beauty's Revenge — Sheriff
• 1995Black Fox
• 1995Hideaway — Dr. Martin
• 1995She Stood Alone: The Tailhook Scandal
• The Marshal — Tiger Larkin
• The Outer Limits — General Callahan, Detective Wilson
• 1995The Ranger, the Cook and a Hole in the Sky — Mr. Smith
• 1994Avalanche — Whitney
• 1994Max — Earl Pomerance
• 1994Someone Else's Child — Sherwin Francis
• Viper — Lloyd
• 1993Cliffhanger — Stuart
• 1993Final Appeal — Judge Gray
• 1993Heritage Minutes: Sam Steele — Norris
• 1993Miracle on Interstate 880 — Dave
• 1993Needful Things — Reverend Rose
• The X-Files — Captain William Scully
• 1993Without a Kiss Goodbye — Mr. Harper
• 1992A League of Their Own — Racine Coach Charlie
• 1992Calendar Girl, Cop, Killer? The Bambi Bembenek Story — McCann
• 1992Dead Ahead: The Exxon Valdez Disaster — Bill Stevens
• 1992Hero — Probation Officer
• Highlander: The Series — Palance
• 1992Kuffs — Police Gun Instructor
• Nightmare Cafe — Sheriff Dan Filcher
• 1991Blood River — Congressman Howard K. Apples
• 1991Captive — Deputy Mack
• 1991Chaindance — Sergeant
• Heritage Minutes — Norris
• 1991Hook — Dr. Fields
• 1991Mystery Date — Doheny
• 1991Omen IV: The Awakening — Jake Madison
• 1991Posing: Inspired by Three Real Stories — Philip Baywood
• 1991The Gambler Returns: The Luck of the Draw — Rodeo Announcer
• Broken Badges — Chief Sterling
• 1990Cadence — Haig
• 1990Look Who's Talking Too — Dr. Fleischer
• 1990Memories of Murder — Lt. Silk
• Northern Exposure — Lloyd Hillegas
• 1990Rescue Force — Commando
• Twin Peaks — Garland Briggs, Major Garland Briggs (archive footage)
• 1990Waiting for the Light — Dr. Norman
• 1989Beyond the Stars — Phil Clawson
• Booker — Judge, Sheriff
• Bordertown — Josiah Richmond
• 1989Look Who's Talking — Dr. Fleischer
• 1989Midnight Matinee — Earle Gardner
• Screen One — Bill Stevens
• 1989The Lady Forgets — Dr. Bennett
• 1989Twin Peaks — Maj. Garland Briggs
• 1988Watchers — Veterinarian
• 21 Jump Street — Principal Harris, Frank, Lt. Donnelly, Warden
• 1987Deadly Deception — Coroner's Assistant
• J.J. Starbuck — Electrician
• 1987Malone — Buddy
• 1987Stakeout — Prison Gate Guard
• The New Adventures of Beans Baxter — Agent Ruck
• Wiseguy — Dr. Morris
• 1986Hero in the Family — Capcom
• 1986I-Man — Surgeon
• L.A. Law — Judge Richard Bartke
• 1986Spot Marks the X — Mr. Haskell
• MacGyver — Cement Truck Driver, Wyatt Porter
• 1985The Journey of Natty Gann — Railroad Brakeman
• Knots Landing — Warden Vernon Howard
• Columbo — Bertie Sopkowitz
• The Wonderful World of Disney — Capcom

Appearances as themselves (3)

• 2014Moving Through Time: Fire Walk With Me Memories — Self
• 2007Secrets from Another Place: Creating Twin Peaks — Self
• 2001Postcards From The Cast — Self