Dave O'Brien (born David Poole Fronabarger) was a star in "B" Westerns who later became a successful comedy writer (under the name David Barclay) and television director. O'Brien is notable as one of the relatively few success stories to emerge out of the drek of poverty row, where he worked for nearly a decade before landing work, and gaining mainstream popularity, in Pete Smith's series of comedic novelty shorts at MGM.
| Movie | 42nd Street: From Book to Screen to Stage | Self (archive footage) | 2006-03-21 |
| Movie | True Colors | Student (uncredited) | 1991-03-15 |
| Movie | That's Entertainment, Part II | (archive footage) | 1976-05-16 |
| Movie | The Legend of Boggy Creek | Mr. Turner | 1972-08-01 |
| Movie | The Big Parade of Comedy | Actor in the Pete Smith Shorts (archive footage) | 1964-09-02 |
| Movie | The Kettles in the Ozarks | Conductor | 1956-04-01 |
| Movie | The Desperados Are in Town | Dock Lapman / Mr. Brown | 1956-11-01 |
| Movie | Just What I Needed | Harry Horseknuckle | 1955-04-15 |
| Movie | The Man Around the House | Hugo Hightonsil (uncredited) | 1955-01-01 |
| Movie | The Fall Guy | Himself as Various Characters (archive footage) | 1955-06-04 |
| Movie | Ain't It Aggravatin' | Parking Space Hog / Apartment House Manager / Frugal Man / Harry Hollowhead | 1954-02-06 |
| Movie | Tennessee Champ | Luke MacWade | 1954-03-03 |
| Movie | Do Someone a Favor! | George Dibson | 1954-04-10 |
| Movie | T.V. of Tomorrow | Man on TV | 1953-06-06 |
| Movie | Cash Stashers | A Shmoe Named Joe | 1953-08-29 |
| Movie | Kiss Me Kate | Ralph | 1953-11-26 |
| Movie | Things We Can Do Without | Thaddeus E. Thud III | 1953-12-05 |
| Movie | Reducing | Man on Bench (uncredited) | 1952-03-22 |
| Movie | I Love Children, But! | The Daddy | 1952-12-27 |
| Movie | Did'ja Know? | Expectant Father / Greeting Card Shopper / Hospital Patient / Job Applicant | 1950-05-06 |
| Movie | A Wife's Life | George T. Hardnose (uncredited) | 1950-09-01 |
| Movie | Wrong Way Butch | Butch | 1950-09-02 |
| Movie | You Can't Win | Harried Homeowner | 1948-05-29 |
| Movie | I Love My Mother-In-Law But... | The Son-In-Law / Husband | 1948-02-07 |
| Movie | Just Suppose | Husband (uncredited) | 1948-07-17 |
| Movie | I Love My Wife BUT! | The Husband | 1947-04-05 |
| Movie | Studio Visit | O'Brien | 1946-05-11 |
| Movie | Equestrian Quiz: What's Your I.Q.? No. 11 | Horace | 1946-05-18 |
| Movie | I Love My Husband, But! | The Husband | 1946-12-07 |
| Movie | Sure Cures | Xavier T. Schneckendorf | 1946-11-02 |
| Movie | The Man Who Walked Alone | Marion Scott | 1945-03-15 |
| Movie | The Phantom of 42nd Street | Tony Woolrich | 1945-05-02 |
| Movie | Marked for Murder | Dave Wyatt | 1945-02-08 |
| Movie | Flaming Bullets | Dave Wyatt / Steve Carson | 1945-10-14 |
| Movie | Enemy of the Law | Dave Wyatt | 1945-05-07 |
| Movie | Frontier Fugitives | Dave Wyatt | 1945-09-01 |
| Movie | Three in the Saddle | Dave Wyatt | 1945-07-26 |
| Movie | The Pinto Bandit | Tex Wyatt | 1944-04-26 |
| Movie | Guns of the Law | Tex Wyatt | 1944-03-30 |
| Movie | Spook Town | Tex Wyatt | 1944-06-03 |
| Movie | Outlaw Roundup | Tex Wyatt | 1944-02-10 |
| Movie | Movie Pests | Feet-in-the-Aisle Pest | 1944-07-08 |
| Movie | The Whispering Skull | Dave Wyatt | 1944-12-29 |
| Movie | Dead or Alive | Dave Wyatt | 1944-11-09 |
| Movie | Gangsters of the Frontier | Dave Wyatt | 1944-09-22 |
| Movie | Gunsmoke Mesa | Tex Wyatt | 1944-09-01 |
| Movie | Brand of the Devil | Tex Wyatt | 1944-07-30 |
| Movie | West of Texas | Tex Wyatt | 1943-05-10 |
| Movie | Bad Men of Thunder Gap | Tex Wyatt | 1943-03-05 |
| Movie | Border Buckaroos | Tex Wyatt | 1943-06-15 |
| Movie | Fighting Valley | Tex Wyatt | 1943-08-08 |
| Movie | The Return of the Rangers | Tex Wyatt | 1943-10-26 |
| Movie | Boss of Rawhide | Tex Wyatt | 1943-11-20 |
| Movie | Trail of Terror | Tex Wyatt / Curly Wyatt | 1943-09-06 |
| Movie | Law and Order | Jeff Travis | 1942-08-21 |
| Movie | Prisoner of Japan | U. S. Marine | 1942-07-22 |
| Movie | Captain Midnight | Captain Albright / Captain Midnight | 1942-02-15 |
| Movie | Sheriff of Sage Valley | Jeff | 1942-09-02 |
| Movie | Billy the Kid's Smoking Guns | Jeff | 1942-05-01 |
| Movie | Down Texas Way | Dave Dodge | 1942-05-22 |
| Movie | The Yanks Are Coming | Sgt. Callahan | 1942-11-09 |
| Movie | Carry Harry | Arthur - Harry's Friend | 1942-09-03 |
| Movie | The Rangers Take Over | Tex Wyatt | 1942-12-25 |
| Movie | 'Neath Brooklyn Bridge | Sgt. Phil Lyons | 1942-11-20 |
| Movie | Bowery at Midnight | Det. Pete Crawford | 1942-10-30 |
| Movie | King of the Stallions | 1942-09-18 | |
| Movie | Murder by Invitation | Michael, the chauffeur | 1941-06-30 |
| Movie | Billy the Kid in Santa Fe | Texas Joe | 1941-07-11 |
| Movie | The Spider Returns | Jackson, Wentworth's Aide | 1941-05-09 |
| Movie | The Deadly Game | Ralph Spencer | 1941-08-08 |
| Movie | Flying Wild | Tom Lawson | 1941-03-10 |
| Movie | The Texas Marshal | Buzz Weston | 1941-07-12 |
| Movie | The Gunman From Bodie | Joe Martin | 1941-09-19 |
| Movie | Double Trouble | Sparky Barton | 1941-11-21 |
| Movie | Forbidden Trails | Jim Cramer | 1941-12-25 |
| Movie | Billy the Kid Wanted | Jeff | 1941-10-03 |
| Movie | Spooks Run Wild | Jeff Dixon | 1941-10-24 |
| Movie | On the Spot | Charlie | 1940-06-11 |
| Movie | Son of the Navy | Nelson | 1940-03-30 |
| Movie | Phantom Rancher | Henchman Lucke | 1940-03-31 |
| Movie | Isle Of Destiny | Whitey - Navy Radio Man | 1940-03-08 |
| Movie | Danger Ahead | Corporal Kelly | 1940-01-22 |
| Movie | Yukon Flight | Constable Kelly | 1940-01-02 |
| Movie | East Side Kids | Knuckles Dolan | 1940-02-10 |
| Movie | Murder on the Yukon | Constable Kelly | 1940-02-25 |
| Movie | Boys of the City | Knuckles Dolan | 1940-07-15 |
| Movie | That Gang of Mine | Knuckles Dolan | 1940-09-23 |
| Movie | The Devil Bat | Johnny Layton | 1940-12-13 |
| Movie | The Cowboy from Sundown | Steve Davis | 1940-09-05 |
| Movie | Hold That Woman! | Miles Hanover | 1940-06-28 |
| Movie | Sky Bandits | Constable Kelly | 1940-07-06 |
| Movie | Gun Code | Henchman Gale | 1940-08-03 |
| Movie | Queen of the Yukon | Bob Adams | 1940-08-26 |
| Movie | Texas Wildcats | Ed Arden | 1939-04-09 |
| Movie | Wyoming Outlaw | Acacia Park Game Warden | 1939-06-27 |
| Movie | Trigger Smith | Duke | 1939-03-22 |
| Movie | Undercover Agent | Billiards Player | 1939-04-19 |
| Movie | Drifting Westward | Henchman Trigger | 1939-01-25 |
| Movie | Riders of the Sage | Tom Martin | 1939-08-01 |
| Movie | Water Rustlers | Bob Lawson | 1939-01-06 |
| Movie | Code of the Cactus | Bob Swane | 1939-02-25 |
| Movie | Rollin' Westward | Ranch hand Red | 1939-03-01 |
| Movie | Outlaws' Paradise | Henchman Meggs | 1939-04-18 |
| Movie | Mutiny in the Big House | Daniels | 1939-10-24 |
| Movie | Fighting Mad | Constable Kelly | 1939-11-05 |
| Movie | Buried Alive | Carson | 1939-11-06 |
| Movie | New Frontier | Jason Braddock | 1939-08-10 |
| Movie | On Your Toes | Man in Audience | 1939-10-14 |
| Movie | Flaming Lead | Frank Gordon | 1939-11-01 |
| Movie | Daughter of the Tong | Jerry Morgan | 1939-08-28 |
| Movie | The Arizona Kid | Soldier | 1939-09-28 |
| Movie | The Fighting Renegade | Dr. Jerry Leonard | 1939-08-31 |
| Movie | Crashing Thru | Fred Chambers | 1939-12-11 |
| Movie | The Singing Cowgirl | Dick Williams | 1938-06-02 |
| Movie | Tell Your Children | Ralph | 1938-06-15 |
| Movie | Whirlwind Horseman | Henchman Slade | 1938-04-29 |
| Movie | Born to Be Wild | Trucker (uncredited) | 1938-02-16 |
| Movie | Man's Country | Bat | 1938-07-06 |
| Movie | The Secret of Treasure Island | Det. Jameson [Chs. 4-7] | 1938-03-17 |
| Movie | Gun Packer | Red Baker - Henchman | 1938-11-16 |
| Movie | Song of the Buckaroo | Tex Alden | 1938-12-07 |
| Movie | Utah Trail | Mason - Bookkeeper | 1938-08-12 |
| Movie | Where the Buffalo Roam | Jeff Gray | 1938-10-12 |
| Movie | Frontier Scout | Steve Norris | 1938-09-16 |
| Movie | Starlight Over Texas | Henchman | 1938-09-06 |
| Movie | Lightnin' Crandall | Tommy Shannon | 1937-03-24 |
| Movie | Brothers of the West | Bart | 1937-06-29 |
| Movie | Million Dollar Racket | Johnny Henessey | 1937-09-30 |
| Movie | Rough Riding Rhythm | Detective Waters | 1937-08-14 |
| Movie | The Adventures of Frank Merriwell | George Baldwin | 1936-01-13 |
| Movie | The Black Coin | Terry Navarro | 1936-09-01 |
| Movie | Wanted - A Master | Dog's Master (uncredited) | 1936-12-26 |
| Movie | The Girl on the Front Page | Nightclub Patron | 1936-09-26 |
| Movie | No More Ladies | Party Guest (uncredited) | 1935-06-14 |
| Movie | Doubting Thomas | Member of Audience | 1935-07-10 |
| Movie | She Married Her Boss | Shopper | 1935-09-19 |
| Movie | Woman Wanted | Steve - Tap Dancer at Baxter's Party (uncredited) | 1935-08-02 |
| Movie | Ship Cafe | Young Man (uncredited) | 1935-11-09 |
| Movie | Murder at the Vanities | Chorus Boy (uncredited) | 1934-05-18 |
| Movie | Wonder Bar | Chorus Boy (uncredited) | 1934-03-31 |
| Movie | Search for Beauty | Talent Contestant (uncredited) | 1934-02-02 |
| Movie | Tomorrow's Children | Interne (uncredited) | 1934-07-02 |
| Movie | Music in the Air | Karl Roder (singing voice) (uncredited) | 1934-12-13 |
| Movie | We're Rich Again | Pete (uncredited) | 1934-07-13 |
| Movie | Student Tour | Student | 1934-10-05 |
| Movie | Gift of Gab | Dancer (uncredited) | 1934-09-01 |
| Movie | College Humor | Student | 1933-07-05 |
| Movie | One Man's Journey | Dance Extra (uncredited) | 1933-08-31 |
| Movie | Pick-up | Party Boy (uncredited) | 1933-03-24 |
| Movie | The World Changes | Otto Peterson (uncredited) | 1933-11-25 |
| Movie | College Coach | Student on Tennis Court (uncredited) | 1933-11-04 |
| Movie | Sitting Pretty | Assistant Cameraman (uncredited) | 1933-11-23 |
| Movie | Roar of the Dragon | Submarine Crewman | 1932-07-08 |
| Movie | Is My Face Red? | Chorus Boy (uncredited) | 1932-06-17 |
| Movie | 70,000 Witnesses | Football Player (uncredited) | 1932-09-09 |
| Movie | Devil and the Deep | Submarine Crewman (uncredited) | 1932-08-12 |
| Movie | Pack Up Your Troubles | Extra (uncredited) | 1932-09-16 |
| Movie | Rasputin and the Empress | Soldier (uncredited) | 1932-12-23 |
| Movie | The Sign of the Cross | Christian on Stairway (uncredited) | 1932-11-30 |
| Movie | Hot Saturday | Party Guest (Uncredited) | 1932-10-28 |
| Movie | Flying High | Dancer (uncredited) | 1931-11-14 |
| Movie | Consolation Marriage | Man Picking Up Stack of Newspapers (uncredited) | 1931-11-21 |
| Movie | The Dawn Patrol | Pilot (uncredited) | 1930-07-10 |
| Movie | Good News | Student | 1930-08-22 |
| Movie | Madam Satan | Zeppelin Reveler | 1930-09-20 |