Born in St. Catharines, Ontario, Canada, Dave was the eldest son of John and Moreen Thomas. John Thomas (deceased) was a PHD in Philosophy (Duke), noted medical ethicist, head of Philosophy Department at McMaster University, and author of several books including: "Matters of Life and Death," "Well and Good," "Medical Ethic and Human Life." Moreen ...
Won 1 Primetime Emmy. Another 2 wins & 6 nominations.
| Movie | I Thought I Told You to Shut Up!! | Unknown | 2015 |
| Movie | Gone South: How Canada Invented Hollywood | Unknown | 2014 |
| Movie | Tusk | Unknown | 2014-09-19 |
| Series | Comedy Bang! Bang! | Unknown | 2014 |
| Series | Bounty Hunters | Unknown | 2013 |
| Series | Live with Kelly and Michael | Unknown | 2013 |
| Series | The Blacklist | Unknown | 2013-09-23 |
| Movie | I, Pineapple | Unknown | 2012 |
| Movie | Bad Hybrid | Unknown | 2012 |
| Series | Perception | Unknown | 2012-07-09 |
| Series | The Legend of Korra | Unknown | 2012-04-14 |
| Movie | Community: Abed's Master Key | Unknown | 2012 |
| Movie | Big Box | Unknown | 2011 |
| Movie | Life with Dad | Unknown | 2011 |
| Movie | The 83rd Annual Academy Awards | Unknown | 2011-02-27 |
| Series | Pound Puppies | Unknown | 2010-10-10 |
| Movie | Take 22: Behind the Scenes of Sequestered | Unknown | 2010 |
| Series | Kevin Pollak's Chat Show | Unknown | 2009-03-22 |
| Series | Bob & Doug | Unknown | 2009 |
| Series | Popzilla | Unknown | 2009-09-27 |
| Movie | Slotcar | Unknown | 2009 |
| Movie | Rush: Snakes & Arrows - Live in Holland | Unknown | 2008 |
| Movie | The Tuttles: Madcap Misadventures | Unknown | 2007 |
| Series | Ink Is It | Unknown | 2007 |
| Series | Second City's Next Comedy Legend | Unknown | 2007 |
| Series | Good Morning World | Unknown | 2007 |
| Series | Slacker Cats | Unknown | 2007-08-01 |
| Movie | Bob & Doug McKenzie's Two-Four Anniversary | Unknown | 2007 |
| Series | Tom Green's House Tonight | Unknown | 2007 |
| Series | Second City: First Family of Comedy | Himself | 2006-08-25 |
| Movie | Brother Bear 2 | Tuke | 2006-08-29 |
| Movie | As Seen on TV: The K-Tel Story | Unknown | 2006 |
| Series | How I Met Your Mother | Unknown | 2005-09-19 |
| Movie | The Incredible Hulk: Ultimate Destruction | Unknown | 2005 |
| Series | Bones | Unknown | 2005-09-13 |
| Movie | Comedy Gold | Unknown | 2005 |
| Movie | Santa's Slay | Pastor Timmons | 2005-10-25 |
| Series | Off-Mikes | Unknown | 2005 |
| Movie | The Aristocrats | Unknown | 2005-09-02 |
| Series | Weeds | Unknown | 2005-08-07 |
| Series | The Wrong Coast | Unknown | 2004 |
| Movie | Whitecoats | Dr. Omar Olson | 2004-09-10 |
| Movie | A Beachcombers Christmas | Unknown | 2004 |
| Movie | Catching Kringle | Unknown | 2004 |
| Movie | Love on the Side | Unknown | 2004 |
| Movie | The Magical Gathering | Unknown | 2004 |
| Movie | Who's Your Daddy? | Unknown | 2004 |
| Movie | Beethoven's 5th | Unknown | 2003 |
| Movie | Sing Along Songs: Brother Bear - On My Way | Unknown | 2003 |
| Movie | Brother Bear | Unknown | 2003 |
| Movie | It's a Dog's Life: Behind the Scenes and Cast Interviews 'Beethoven's 5th' | Unknown | 2003 |
| Series | Pet Star | Unknown | 2003-01-31 |
| Movie | Brother Bear | Tuke | 2003-11-01 |
| Series | Arrested Development | Unknown | 2003-11-02 |
| Movie | Stand Tall, Molly Lou Melon | Unknown | 2003 |
| Movie | Celebrity Deathmatch | Unknown | 2003 |
| Series | The Mullets | Unknown | 2003 |
| Series | The Animated Adventures of Bob & Doug McKenzie | Unknown | 2003 |
| Series | Mission Hill | Unknown | 2002 |
| Movie | Fancy Dancing | Unknown | 2002 |
| Movie | The True Meaning of Christmas Specials | Unknown | 2002 |
| Series | Henry's World | Unknown | 2002 |
| Movie | The New Beachcombers | Unknown | 2002 |
| Series | The Test | Unknown | 2001 |
| Movie | Girl | Unknown | 2001 |
| Series | The Legend of Tarzan | Unknown | 2001-09-03 |
| Series | Primetime Glick | Unknown | 2001-06-20 |
| Series | The Fairly OddParents | Unknown | 2001-03-30 |
| Movie | Rat Race | Unknown | 2001-08-17 |
| Movie | The Accidental Spy | Unknown | 2001 |
| Series | Justice League | Unknown | 2001-11-17 |
| Movie | The Chimp's a Champ: The Making of a Star Hockey Player | Unknown | 2001 |
| Movie | The 2000 Canadian Comedy Awards | Unknown | 2000 |
| Series | Even Stevens | Unknown | 2000-06-17 |
| Movie | MVP: Most Valuable Primate | Unknown | 2000 |
| Series | Mentors | Unknown | 2000 |
| Movie | Whatever Happened to Micheal Ray? | Unknown | 2000 |
| Series | Caitlin's Way | Unknown | 2000-03-11 |
| Series | The Martin Short Show | Unknown | 1999-09-13 |
| Movie | The World's Funniest Pets | Unknown | 1999 |
| Series | Crashbox | Unknown | 1999 |
| Movie | Ambushed | Unknown | 1998 |
| Movie | Contempt of Court | Unknown | 1998 |
| Movie | The 1998 Annual Kid's Choice Awards | Unknown | 1998-09-10 |
| Series | That '70s Show | Unknown | 1998-08-23 |
| Series | Celebrity Deathmatch | Unknown | 1998-01-25 |
| Series | CatDog | Unknown | 1998-04-04 |
| Series | Love Boat: The Next Wave | Unknown | 1998 |
| Movie | Pizza Hut Celebraty | McKenzie Brothers | 1997-02-12 |
| Series | King of the Hill | Unknown | 1997-01-12 |
| Movie | Pippi Longstocking | Unknown | 1997 |
| Movie | Kidz in the Wood | Tom Foster | 1996-05-25 |
| Series | Cosby | Unknown | 1996-09-16 |
| Movie | The Best of John Candy on SCTV | Unknown | 1996 |
| Movie | Picture Perfect | Unknown | 1995 |
| Series | Family Challenge | Unknown | 1995 |
| Movie | Young Comedians: Making America Laugh | Unknown | 1994 |
| Movie | The 20th Annual People's Choice Awards | Unknown | 1994 |
| Series | Duckman: Private Dick/Family Man | Unknown | 1994-03-05 |
| Series | Space Ghost Coast to Coast | Unknown | 1994-04-15 |
| Movie | Coneheads | Unknown | 1993-07-23 |
| Movie | Cold Sweat | Unknown | 1993 |
| Movie | Ghost Mom | Unknown | 1993 |
| Movie | Bob Hope: The First 90 Years | Unknown | 1993-05-14 |
| Series | Grace Under Fire | Unknown | 1993 |
| Series | Animaniacs | Unknown | 1993-09-13 |
| Movie | Public Enemy #2 | Unknown | 1993 |
| Series | The Chevy Chase Show | Unknown | 1993 |
| Movie | Friends of Gilda | Unknown | 1993 |
| Series | Late Night with Conan O'Brien | Unknown | 1993-09-13 |
| Series | The Larry Sanders Show | Unknown | 1992-08-15 |
| Series | The Dennis Miller Show | Unknown | 1992 |
| Movie | Inside America's Totally Unsolved Lifestyles | Unknown | 1992 |
| Series | Raw Toonage | Unknown | 1992 |
| Movie | Boris and Natasha | Boris Badunov | 1992-04-17 |
| Series | The Red Green Show | Unknown | 1991-01-04 |
| Series | The Dave Thomas Comedy Show | Himself / ... | 1990-05-28 |
| Series | Bobby's World | Unknown | 1990 |
| Series | Maniac Mansion | Unknown | 1990-09-14 |
| Series | The New America's Funniest People | Unknown | 1990 |
| Series | Parker Lewis Can't Lose | Unknown | 1990-09-02 |
| Series | The Simpsons | Unknown | 1989-12-17 |
| Series | The Arsenio Hall Show | Unknown | 1989-01-03 |
| Movie | Andrea Martin... Together Again | Unknown | 1989 |
| Movie | I, Martin Short, Goes Hollywood | Unknown | 1989 |
| Movie | The Best of Eddie Murphy: Saturday Night Live | Unknown | 1989 |
| Movie | The Experts | Unknown | 1989 |
| Series | Camp Candy | Unknown | 1989 |
| Series | Later with Bob Costas | Unknown | 1989 |
| Movie | The Rocket Boy | Unknown | 1989 |
| Movie | The Best of SCTV | Unknown | 1988-09-05 |
| Movie | The Second City Toronto 15th Anniversary | Unknown | 1988 |
| Movie | Moving | Unknown | 1988 |
| Series | CBS Summer Playhouse | Unknown | 1987-06-12 |
| Movie | In the Mood | Unknown | 1987 |
| Movie | Love at Stake | Unknown | 1987 |
| Movie | Dave Thomas: The Incredible Time Travels of Henry Osgood | Professor Henry Osgood | 1986-03-09 |
| Movie | Comic Relief | Unknown | 1986-03-29 |
| Movie | The Canadian Conspiracy | Unknown | 1985 |
| Movie | The Last Polka | Unknown | 1985 |
| Movie | The Steel Collar Man | Unknown | 1985 |
| Movie | Spies Like Us | Unknown | 1985-12-06 |
| Movie | Martin Short: Concert for the North Americas | Unknown | 1985 |
| Movie | My Man Adam | Jerry Swit | 1985-10-25 |
| Movie | Follow That Bird | Sam Sleaze | 1985-08-02 |
| Series | The Get Along Gang | Unknown | 1984-09-15 |
| Series | The New Show | Various / ... | 1984-01-06 |
| Series | SCTV Channel | Unknown | 1983 |
| Movie | Strange Brew | Doug McKenzie | 1983-08-26 |
| Series | The Billy Crystal Comedy Hour | Unknown | 1982 |
| Series | Late Night with David Letterman | Unknown | 1982-02-01 |
| Series | SCTV Network | Various / ... | 1981-05-15 |
| Movie | Stripes | Unknown | 1981-06-26 |
| Movie | Double Negative | Unknown | 1980 |
| Series | Bizarre | Unknown | 1980-10-17 |
| Movie | From Cleveland | Unknown | 1980 |
| Movie | Riel | Unknown | 1979 |
| Movie | Just Me and You | Unknown | 1978 |
| Movie | Home to Stay | Unknown | 1978 |
| Series | The David Steinberg Show | Unknown | 1977 |
| Series | SCTV | Unknown | 1976 |
| Movie | The Rimshots | Unknown | 1976 |
| Series | Saturday Night Live | Unknown | 1975-10-11 |
| Series | King of Kensington | Unknown | 1975-09-25 |
| Series | The Tonight Show Starring Johnny Carson | Unknown | 1962-10-01 |